556 lines
18 KiB
C
556 lines
18 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifdef FREEBL_NO_DEPEND
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#include "stubs.h"
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#endif
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#include <string.h>
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#include <stdio.h>
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#include "seccomon.h"
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#include "secerr.h"
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#include "blapit.h"
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#include "blapii.h"
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#include "chacha20poly1305.h"
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// There are three implementations of ChaCha20Poly1305:
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// 1) 128-bit with AVX hardware acceleration used on x64
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// 2) 256-bit with AVX2 hardware acceleration used on x64
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// 3) 32-bit used on all other platforms
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// On x64 when AVX2 and other necessary registers are available,
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// the 256bit-verctorized version will be used. When AVX2 features
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// are unavailable or disabled but AVX registers are available, the
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// 128bit-vectorized version will be used. In all other cases the
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// scalar version of the HACL* code will be used.
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// Instead of including the headers (they bring other things we don't want),
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// we declare the functions here.
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// Usage is guarded by runtime checks of required hardware features.
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// Forward declaration from Hacl_Chacha20_Vec128.h and Hacl_Chacha20Poly1305_128.h.
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extern void Hacl_Chacha20_Vec128_chacha20_encrypt_128(uint32_t len, uint8_t *out,
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uint8_t *text, uint8_t *key,
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uint8_t *n1, uint32_t ctr);
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extern void
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Hacl_Chacha20Poly1305_128_aead_encrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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extern uint32_t
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Hacl_Chacha20Poly1305_128_aead_decrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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// Forward declaration from Hacl_Chacha20_Vec256.h and Hacl_Chacha20Poly1305_256.h.
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extern void Hacl_Chacha20_Vec256_chacha20_encrypt_256(uint32_t len, uint8_t *out,
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uint8_t *text, uint8_t *key,
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uint8_t *n1, uint32_t ctr);
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extern void
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Hacl_Chacha20Poly1305_256_aead_encrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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extern uint32_t
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Hacl_Chacha20Poly1305_256_aead_decrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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// Forward declaration from Hacl_Chacha20.h and Hacl_Chacha20Poly1305_32.h.
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extern void Hacl_Chacha20_chacha20_encrypt(uint32_t len, uint8_t *out,
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uint8_t *text, uint8_t *key,
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uint8_t *n1, uint32_t ctr);
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extern void
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Hacl_Chacha20Poly1305_32_aead_encrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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extern uint32_t
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Hacl_Chacha20Poly1305_32_aead_decrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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// Forward declaration from chacha20-ppc64le.S
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void chacha20vsx(uint32_t len, uint8_t *output, uint8_t *block, uint8_t *k,
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uint8_t *nonce, uint32_t ctr);
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// Forward declaration from chacha20poly1305-ppc.c
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extern void
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Chacha20Poly1305_vsx_aead_encrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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extern uint32_t
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Chacha20Poly1305_vsx_aead_decrypt(uint8_t *k, uint8_t *n1, uint32_t aadlen,
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uint8_t *aad, uint32_t mlen, uint8_t *m,
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uint8_t *cipher, uint8_t *mac);
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SECStatus
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ChaCha20_InitContext(ChaCha20Context *ctx, const unsigned char *key,
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unsigned int keyLen, const unsigned char *nonce,
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unsigned int nonceLen, PRUint32 ctr)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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if (keyLen != 32) {
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PORT_SetError(SEC_ERROR_BAD_KEY);
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return SECFailure;
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}
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if (nonceLen != 12) {
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PORT_SetError(SEC_ERROR_INVALID_ARGS);
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return SECFailure;
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}
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ctx->counter = ctr;
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PORT_Memcpy(ctx->key, key, sizeof(ctx->key));
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PORT_Memcpy(ctx->nonce, nonce, sizeof(ctx->nonce));
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NSS_CLASSIFY(ctx->nonce, sizeof(ctx->nonce));
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NSS_CLASSIFY(ctx->key, sizeof(ctx->key));
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return SECSuccess;
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#endif
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}
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ChaCha20Context *
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ChaCha20_CreateContext(const unsigned char *key, unsigned int keyLen,
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const unsigned char *nonce, unsigned int nonceLen,
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PRUint32 ctr)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return NULL;
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#else
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ChaCha20Context *ctx;
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ctx = PORT_New(ChaCha20Context);
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if (ctx == NULL) {
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return NULL;
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}
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if (ChaCha20_InitContext(ctx, key, keyLen, nonce, nonceLen, ctr) != SECSuccess) {
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PORT_Free(ctx);
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ctx = NULL;
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}
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return ctx;
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#endif
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}
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void
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ChaCha20_DestroyContext(ChaCha20Context *ctx, PRBool freeit)
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{
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#ifndef NSS_DISABLE_CHACHAPOLY
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PORT_Memset(ctx, 0, sizeof(*ctx));
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if (freeit) {
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PORT_Free(ctx);
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}
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#endif
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}
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SECStatus
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ChaCha20Poly1305_InitContext(ChaCha20Poly1305Context *ctx,
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const unsigned char *key, unsigned int keyLen,
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unsigned int tagLen)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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if (keyLen != 32) {
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PORT_SetError(SEC_ERROR_BAD_KEY);
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return SECFailure;
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}
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if (tagLen != 16) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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PORT_Memcpy(ctx->key, key, sizeof(ctx->key));
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ctx->tagLen = tagLen;
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NSS_CLASSIFY(ctx->key, sizeof(ctx->key));
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return SECSuccess;
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#endif
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}
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ChaCha20Poly1305Context *
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ChaCha20Poly1305_CreateContext(const unsigned char *key, unsigned int keyLen,
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unsigned int tagLen)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return NULL;
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#else
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ChaCha20Poly1305Context *ctx;
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ctx = PORT_New(ChaCha20Poly1305Context);
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if (ctx == NULL) {
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return NULL;
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}
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if (ChaCha20Poly1305_InitContext(ctx, key, keyLen, tagLen) != SECSuccess) {
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PORT_Free(ctx);
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ctx = NULL;
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}
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return ctx;
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#endif
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}
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void
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ChaCha20Poly1305_DestroyContext(ChaCha20Poly1305Context *ctx, PRBool freeit)
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{
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#ifndef NSS_DISABLE_CHACHAPOLY
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PORT_Memset(ctx, 0, sizeof(*ctx));
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if (freeit) {
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PORT_Free(ctx);
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}
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#endif
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}
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#ifndef NSS_DISABLE_CHACHAPOLY
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void
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ChaCha20Xor(uint8_t *output, uint8_t *block, uint32_t len, uint8_t *k,
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uint8_t *nonce, uint32_t ctr)
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{
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#ifdef NSS_X64
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#ifndef NSS_DISABLE_AVX2
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if (avx2_support()) {
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Hacl_Chacha20_Vec256_chacha20_encrypt_256(len, output, block, k, nonce, ctr);
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return;
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}
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#endif
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#ifndef NSS_DISABLE_SSE3
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if (ssse3_support() && sse4_1_support() && avx_support()) {
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Hacl_Chacha20_Vec128_chacha20_encrypt_128(len, output, block, k, nonce, ctr);
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return;
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}
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#endif
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#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
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!defined(NSS_DISABLE_ALTIVEC) && !defined(NSS_DISABLE_CRYPTO_VSX)
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if (ppc_crypto_support()) {
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chacha20vsx(len, output, block, k, nonce, ctr);
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return;
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}
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#endif
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{
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Hacl_Chacha20_chacha20_encrypt(len, output, block, k, nonce, ctr);
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return;
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}
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}
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#endif /* NSS_DISABLE_CHACHAPOLY */
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SECStatus
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ChaCha20_Xor(unsigned char *output, const unsigned char *block, unsigned int len,
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const unsigned char *k, const unsigned char *nonce, PRUint32 ctr)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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// ChaCha has a 64 octet block, with a 32-bit block counter.
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if (sizeof(len) > 4) {
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unsigned long long len_ull = len;
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if (len_ull >= (1ULL << (6 + 32))) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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}
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ChaCha20Xor(output, (uint8_t *)block, len, (uint8_t *)k,
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(uint8_t *)nonce, ctr);
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return SECSuccess;
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#endif
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}
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SECStatus
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ChaCha20Poly1305_Seal(const ChaCha20Poly1305Context *ctx, unsigned char *output,
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unsigned int *outputLen, unsigned int maxOutputLen,
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const unsigned char *input, unsigned int inputLen,
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const unsigned char *nonce, unsigned int nonceLen,
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const unsigned char *ad, unsigned int adLen)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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if (nonceLen != 12) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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// ChaCha has a 64 octet block, with a 32-bit block counter.
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if (sizeof(inputLen) > 4) {
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unsigned long long inputLen_ull = inputLen;
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if (inputLen_ull >= (1ULL << (6 + 32))) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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}
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if (maxOutputLen < inputLen + ctx->tagLen) {
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PORT_SetError(SEC_ERROR_OUTPUT_LEN);
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return SECFailure;
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}
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#ifdef NSS_X64
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#ifndef NSS_DISABLE_AVX2
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if (avx2_support()) {
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Hacl_Chacha20Poly1305_256_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, output + inputLen);
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goto finish;
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}
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#endif
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#ifndef NSS_DISABLE_SSE3
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if (ssse3_support() && sse4_1_support() && avx_support()) {
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Hacl_Chacha20Poly1305_128_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, output + inputLen);
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goto finish;
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}
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#endif
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#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
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!defined(NSS_DISABLE_ALTIVEC) && !defined(NSS_DISABLE_CRYPTO_VSX)
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if (ppc_crypto_support()) {
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Chacha20Poly1305_vsx_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, output + inputLen);
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goto finish;
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}
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#endif
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{
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Hacl_Chacha20Poly1305_32_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, output + inputLen);
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goto finish;
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}
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finish:
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*outputLen = inputLen + ctx->tagLen;
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return SECSuccess;
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#endif
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}
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SECStatus
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ChaCha20Poly1305_Open(const ChaCha20Poly1305Context *ctx, unsigned char *output,
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unsigned int *outputLen, unsigned int maxOutputLen,
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const unsigned char *input, unsigned int inputLen,
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const unsigned char *nonce, unsigned int nonceLen,
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const unsigned char *ad, unsigned int adLen)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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unsigned int ciphertextLen;
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if (nonceLen != 12) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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if (inputLen < ctx->tagLen) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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ciphertextLen = inputLen - ctx->tagLen;
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if (maxOutputLen < ciphertextLen) {
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PORT_SetError(SEC_ERROR_OUTPUT_LEN);
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return SECFailure;
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}
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// ChaCha has a 64 octet block, with a 32-bit block counter.
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if (inputLen >= (1ULL << (6 + 32)) + ctx->tagLen) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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uint32_t res = 1;
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#ifdef NSS_X64
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#ifndef NSS_DISABLE_AVX2
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if (avx2_support()) {
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res = Hacl_Chacha20Poly1305_256_aead_decrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
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(uint8_t *)output, (uint8_t *)input, (uint8_t *)input + ciphertextLen);
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goto finish;
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}
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#endif
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#ifndef NSS_DISABLE_SSE3
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if (ssse3_support() && sse4_1_support() && avx_support()) {
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res = Hacl_Chacha20Poly1305_128_aead_decrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
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(uint8_t *)output, (uint8_t *)input, (uint8_t *)input + ciphertextLen);
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goto finish;
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}
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#endif
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#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
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!defined(NSS_DISABLE_ALTIVEC) && !defined(NSS_DISABLE_CRYPTO_VSX)
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if (ppc_crypto_support()) {
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res = Chacha20Poly1305_vsx_aead_decrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
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(uint8_t *)output, (uint8_t *)input, (uint8_t *)input + ciphertextLen);
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goto finish;
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}
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#endif
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{
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res = Hacl_Chacha20Poly1305_32_aead_decrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
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(uint8_t *)output, (uint8_t *)input, (uint8_t *)input + ciphertextLen);
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goto finish;
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}
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finish:
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if (res) {
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PORT_SetError(SEC_ERROR_BAD_DATA);
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return SECFailure;
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}
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*outputLen = ciphertextLen;
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return SECSuccess;
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#endif
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}
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SECStatus
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ChaCha20Poly1305_Encrypt(const ChaCha20Poly1305Context *ctx,
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unsigned char *output, unsigned int *outputLen,
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unsigned int maxOutputLen, const unsigned char *input,
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unsigned int inputLen, const unsigned char *nonce,
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unsigned int nonceLen, const unsigned char *ad,
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unsigned int adLen, unsigned char *outTag)
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{
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#ifdef NSS_DISABLE_CHACHAPOLY
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return SECFailure;
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#else
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if (nonceLen != 12) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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// ChaCha has a 64 octet block, with a 32-bit block counter.
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if (sizeof(inputLen) > 4) {
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unsigned long long inputLen_ull = inputLen;
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if (inputLen_ull >= (1ULL << (6 + 32))) {
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PORT_SetError(SEC_ERROR_INPUT_LEN);
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return SECFailure;
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}
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}
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if (maxOutputLen < inputLen) {
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PORT_SetError(SEC_ERROR_OUTPUT_LEN);
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return SECFailure;
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}
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#ifdef NSS_X64
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#ifndef NSS_DISABLE_AVX2
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if (avx2_support()) {
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Hacl_Chacha20Poly1305_256_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, outTag);
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goto finish;
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}
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#endif
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#ifndef NSS_DISABLE_SSE3
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if (ssse3_support() && sse4_1_support() && avx_support()) {
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Hacl_Chacha20Poly1305_128_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, outTag);
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goto finish;
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}
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#endif
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#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
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!defined(NSS_DISABLE_ALTIVEC) && !defined(NSS_DISABLE_CRYPTO_VSX)
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if (ppc_crypto_support()) {
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Chacha20Poly1305_vsx_aead_encrypt(
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(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
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(uint8_t *)input, output, outTag);
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goto finish;
|
|
}
|
|
#endif
|
|
{
|
|
Hacl_Chacha20Poly1305_32_aead_encrypt(
|
|
(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, inputLen,
|
|
(uint8_t *)input, output, outTag);
|
|
goto finish;
|
|
}
|
|
|
|
finish:
|
|
*outputLen = inputLen;
|
|
return SECSuccess;
|
|
#endif
|
|
}
|
|
|
|
SECStatus
|
|
ChaCha20Poly1305_Decrypt(const ChaCha20Poly1305Context *ctx,
|
|
unsigned char *output, unsigned int *outputLen,
|
|
unsigned int maxOutputLen, const unsigned char *input,
|
|
unsigned int inputLen, const unsigned char *nonce,
|
|
unsigned int nonceLen, const unsigned char *ad,
|
|
unsigned int adLen, /* const */ unsigned char *tagIn)
|
|
{
|
|
#ifdef NSS_DISABLE_CHACHAPOLY
|
|
return SECFailure;
|
|
#else
|
|
unsigned int ciphertextLen;
|
|
|
|
if (nonceLen != 12) {
|
|
PORT_SetError(SEC_ERROR_INPUT_LEN);
|
|
return SECFailure;
|
|
}
|
|
ciphertextLen = inputLen;
|
|
if (maxOutputLen < ciphertextLen) {
|
|
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
|
|
return SECFailure;
|
|
}
|
|
// ChaCha has a 64 octet block, with a 32-bit block counter.
|
|
if (sizeof(inputLen) > 4) {
|
|
unsigned long long inputLen_ull = inputLen;
|
|
if (inputLen_ull >= (1ULL << (6 + 32))) {
|
|
PORT_SetError(SEC_ERROR_INPUT_LEN);
|
|
return SECFailure;
|
|
}
|
|
}
|
|
|
|
uint32_t res = 1;
|
|
#ifdef NSS_X64
|
|
#ifndef NSS_DISABLE_AVX2
|
|
if (avx2_support()) {
|
|
res = Hacl_Chacha20Poly1305_256_aead_decrypt(
|
|
(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
|
|
(uint8_t *)output, (uint8_t *)input, (uint8_t *)tagIn);
|
|
goto finish;
|
|
}
|
|
#endif
|
|
|
|
#ifndef NSS_DISABLE_SSE3
|
|
if (ssse3_support() && sse4_1_support() && avx_support()) {
|
|
res = Hacl_Chacha20Poly1305_128_aead_decrypt(
|
|
(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
|
|
(uint8_t *)output, (uint8_t *)input, (uint8_t *)tagIn);
|
|
goto finish;
|
|
}
|
|
#endif
|
|
|
|
#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
|
|
!defined(NSS_DISABLE_ALTIVEC) && !defined(NSS_DISABLE_CRYPTO_VSX)
|
|
if (ppc_crypto_support()) {
|
|
res = Chacha20Poly1305_vsx_aead_decrypt(
|
|
(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
|
|
(uint8_t *)output, (uint8_t *)input, (uint8_t *)tagIn);
|
|
goto finish;
|
|
}
|
|
#endif
|
|
{
|
|
res = Hacl_Chacha20Poly1305_32_aead_decrypt(
|
|
(uint8_t *)ctx->key, (uint8_t *)nonce, adLen, (uint8_t *)ad, ciphertextLen,
|
|
(uint8_t *)output, (uint8_t *)input, (uint8_t *)tagIn);
|
|
goto finish;
|
|
}
|
|
|
|
finish:
|
|
if (res) {
|
|
PORT_SetError(SEC_ERROR_BAD_DATA);
|
|
return SECFailure;
|
|
}
|
|
|
|
*outputLen = ciphertextLen;
|
|
return SECSuccess;
|
|
#endif
|
|
}
|