Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 458 insertions, 0 deletions

diff --git a/security/nss/lib/freebl/ppc-gcm-wrap.c b/security/nss/lib/freebl/ppc-gcm-wrap.c
new file mode 100644
index 0000000000..ac58744cbd
--- /dev/null
+++ b/security/nss/lib/freebl/ppc-gcm-wrap.c
@@ -0,0 +1,458 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/* Copyright(c) 2013, Intel Corp. */
+
+/* Wrapper functions for PowerPC optimized implementation of AES-GCM */
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+
+#include "blapii.h"
+#include "blapit.h"
+#include "gcm.h"
+#include "ctr.h"
+#include "secerr.h"
+#include "prtypes.h"
+#include "pkcs11t.h"
+
+#include <limits.h>
+#include <stdio.h>
+
+#include "ppc-gcm.h"
+#include "rijndael.h"
+
+struct ppc_AES_GCMContextStr {
+    unsigned char Htbl[8 * AES_BLOCK_SIZE];
+    unsigned char X0[AES_BLOCK_SIZE];
+    unsigned char T[AES_BLOCK_SIZE];
+    unsigned char CTR[AES_BLOCK_SIZE];
+    AESContext *aes_context;
+    unsigned long tagBits;
+    unsigned long Alen;
+    unsigned long Mlen;
+    freeblCipherFunc cipher;
+    PRBool ctr_context_init;
+    gcmIVContext gcm_iv;
+};
+
+SECStatus ppc_aes_gcmInitCounter(ppc_AES_GCMContext *gcm,
+                                 const unsigned char *iv,
+                                 unsigned long ivLen, unsigned long tagBits,
+                                 const unsigned char *aad, unsigned long aadLen);
+
+ppc_AES_GCMContext *
+ppc_AES_GCM_CreateContext(void *context,
+                          freeblCipherFunc cipher,
+                          const unsigned char *params)
+{
+    ppc_AES_GCMContext *gcm = NULL;
+    AESContext *aes = (AESContext *)context;
+    const CK_NSS_GCM_PARAMS *gcmParams = (const CK_NSS_GCM_PARAMS *)params;
+    SECStatus rv;
+
+    gcm = PORT_ZNew(ppc_AES_GCMContext);
+    if (gcm == NULL) {
+        return NULL;
+    }
+
+    /* initialize context fields */
+    gcm->aes_context = aes;
+    gcm->cipher = cipher;
+    gcm->Alen = 0;
+    gcm->Mlen = 0;
+    gcm->ctr_context_init = PR_FALSE;
+
+    /* first prepare H and its derivatives for ghash */
+    ppc_aes_gcmINIT(gcm->Htbl, aes->k.expandedKey, aes->Nr);
+
+    gcm_InitIVContext(&gcm->gcm_iv);
+
+    /* if gcmParams is NULL, then we are creating an PKCS #11 MESSAGE
+     * style context, in which we initialize the key once, then do separate
+     * iv/aad's for each message. If we are doing that kind of operation,
+     * we've finished with init here. We'll init the Counter in each AEAD
+     * call */
+    if (gcmParams == NULL) {
+        return gcm;
+    }
+
+    rv = ppc_aes_gcmInitCounter(gcm, gcmParams->pIv,
+                                gcmParams->ulIvLen, gcmParams->ulTagBits,
+                                gcmParams->pAAD, gcmParams->ulAADLen);
+    if (rv != SECSuccess) {
+        PORT_Free(gcm);
+        return NULL;
+    }
+    gcm->ctr_context_init = PR_TRUE;
+
+    return gcm;
+}
+
+SECStatus
+ppc_aes_gcmInitCounter(ppc_AES_GCMContext *gcm,
+                       const unsigned char *iv, unsigned long ivLen,
+                       unsigned long tagBits,
+                       const unsigned char *aad, unsigned long aadLen)
+{
+    unsigned int j;
+    SECStatus rv;
+
+    if (ivLen == 0) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        return SECFailure;
+    }
+
+    if (tagBits != 128 && tagBits != 120 && tagBits != 112 &&
+        tagBits != 104 && tagBits != 96 && tagBits != 64 &&
+        tagBits != 32) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        return SECFailure;
+    }
+    gcm->tagBits = tagBits;
+
+    /* reset the aad and message length counters */
+    gcm->Alen = 0;
+    gcm->Mlen = 0;
+
+    /* Initial TAG value is zero */
+    PORT_Memset(gcm->T, 0, AES_BLOCK_SIZE);
+    PORT_Memset(gcm->X0, 0, AES_BLOCK_SIZE);
+
+    /* Init the counter */
+    if (ivLen == 12) {
+        PORT_Memcpy(gcm->CTR, iv, AES_BLOCK_SIZE - 4);
+        gcm->CTR[12] = 0;
+        gcm->CTR[13] = 0;
+        gcm->CTR[14] = 0;
+        gcm->CTR[15] = 1;
+    } else {
+        /* If IV size is not 96 bits, then the initial counter value is GHASH
+         * of the IV */
+        ppc_aes_gcmHASH(gcm->Htbl, iv, ivLen, gcm->T);
+
+        ppc_aes_gcmTAG(
+            gcm->Htbl,
+            gcm->T,
+            ivLen,
+            0,
+            gcm->X0,
+            gcm->CTR);
+
+        /* TAG should be zero again */
+        PORT_Memset(gcm->T, 0, AES_BLOCK_SIZE);
+    }
+
+    /* Encrypt the initial counter, will be used to encrypt the GHASH value,
+     * in the end */
+    rv = (*gcm->cipher)(gcm->aes_context, gcm->X0, &j, AES_BLOCK_SIZE, gcm->CTR,
+                        AES_BLOCK_SIZE, AES_BLOCK_SIZE);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    /* Promote the counter by 1 */
+    gcm->CTR[14] += !(++gcm->CTR[15]);
+    gcm->CTR[13] += !(gcm->CTR[15]) && !(gcm->CTR[14]);
+    gcm->CTR[12] += !(gcm->CTR[15]) && !(gcm->CTR[14]) && !(gcm->CTR[13]);
+
+    /* Now hash AAD - it would actually make sense to seperate the context
+     * creation from the AAD, because that would allow to reuse the H, which
+     * only changes when the AES key changes, and not every package, like the
+     * IV and AAD */
+    ppc_aes_gcmHASH(gcm->Htbl, aad, aadLen, gcm->T);
+    gcm->Alen += aadLen;
+    return SECSuccess;
+}
+
+void
+ppc_AES_GCM_DestroyContext(ppc_AES_GCMContext *gcm, PRBool freeit)
+{
+    PORT_Memset(gcm, 0, sizeof(ppc_AES_GCMContext));
+    if (freeit) {
+        PORT_Free(gcm);
+    }
+}
+
+SECStatus
+ppc_AES_GCM_EncryptUpdate(ppc_AES_GCMContext *gcm,
+                          unsigned char *outbuf,
+                          unsigned int *outlen, unsigned int maxout,
+                          const unsigned char *inbuf, unsigned int inlen,
+                          unsigned int blocksize)
+{
+    unsigned int tagBytes;
+    unsigned char T[AES_BLOCK_SIZE];
+    unsigned int j;
+
+    // GCM has a 16 octet block, with a 32-bit block counter
+    // Limit in accordance with SP800-38D
+    if (sizeof(inlen) > 4 &&
+        inlen >= ((1ULL << 32) - 2) * AES_BLOCK_SIZE) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+
+    if (!gcm->ctr_context_init) {
+        PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+        return SECFailure;
+    }
+
+    tagBytes = (gcm->tagBits + (PR_BITS_PER_BYTE - 1)) / PR_BITS_PER_BYTE;
+    if (UINT_MAX - inlen < tagBytes) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+    if (maxout < inlen + tagBytes) {
+        *outlen = inlen + tagBytes;
+        PORT_SetError(SEC_ERROR_OUTPUT_LEN);
+        return SECFailure;
+    }
+
+    ppc_aes_gcmCRYPT(
+        inbuf,
+        outbuf,
+        inlen,
+        gcm->CTR,
+        gcm->aes_context->k.expandedKey,
+        gcm->aes_context->Nr);
+    ppc_aes_gcmHASH(
+        gcm->Htbl,
+        outbuf,
+        inlen,
+        gcm->T);
+
+    gcm->Mlen += inlen;
+
+    ppc_aes_gcmTAG(
+        gcm->Htbl,
+        gcm->T,
+        gcm->Mlen,
+        gcm->Alen,
+        gcm->X0,
+        T);
+
+    *outlen = inlen + tagBytes;
+
+    for (j = 0; j < tagBytes; j++) {
+        outbuf[inlen + j] = T[j];
+    }
+    return SECSuccess;
+}
+
+SECStatus
+ppc_AES_GCM_DecryptUpdate(ppc_AES_GCMContext *gcm,
+                          unsigned char *outbuf,
+                          unsigned int *outlen, unsigned int maxout,
+                          const unsigned char *inbuf, unsigned int inlen,
+                          unsigned int blocksize)
+{
+    unsigned int tagBytes;
+    unsigned char T[AES_BLOCK_SIZE];
+    const unsigned char *intag;
+
+    if (!gcm->ctr_context_init) {
+        PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+        return SECFailure;
+    }
+
+    tagBytes = (gcm->tagBits + (PR_BITS_PER_BYTE - 1)) / PR_BITS_PER_BYTE;
+
+    /* get the authentication block */
+    if (inlen < tagBytes) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+
+    inlen -= tagBytes;
+    intag = inbuf + inlen;
+
+    // GCM has a 16 octet block, with a 32-bit block counter
+    // Limit in accordance with SP800-38D
+    if (sizeof(inlen) > 4 &&
+        inlen >= ((1ULL << 32) - 2) * AES_BLOCK_SIZE) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+
+    if (maxout < inlen) {
+        *outlen = inlen;
+        PORT_SetError(SEC_ERROR_OUTPUT_LEN);
+        return SECFailure;
+    }
+
+    ppc_aes_gcmHASH(
+        gcm->Htbl,
+        inbuf,
+        inlen,
+        gcm->T);
+    ppc_aes_gcmCRYPT(
+        inbuf,
+        outbuf,
+        inlen,
+        gcm->CTR,
+        gcm->aes_context->k.expandedKey,
+        gcm->aes_context->Nr);
+
+    gcm->Mlen += inlen;
+    ppc_aes_gcmTAG(
+        gcm->Htbl,
+        gcm->T,
+        gcm->Mlen,
+        gcm->Alen,
+        gcm->X0,
+        T);
+
+    if (NSS_SecureMemcmp(T, intag, tagBytes) != 0) {
+        memset(outbuf, 0, inlen);
+        *outlen = 0;
+        /* force a CKR_ENCRYPTED_DATA_INVALID error at in softoken */
+        PORT_SetError(SEC_ERROR_BAD_DATA);
+        return SECFailure;
+    }
+    *outlen = inlen;
+
+    return SECSuccess;
+}
+
+SECStatus
+ppc_AES_GCM_EncryptAEAD(ppc_AES_GCMContext *gcm,
+                        unsigned char *outbuf,
+                        unsigned int *outlen, unsigned int maxout,
+                        const unsigned char *inbuf, unsigned int inlen,
+                        void *params, unsigned int paramLen,
+                        const unsigned char *aad, unsigned int aadLen,
+                        unsigned int blocksize)
+{
+    unsigned int tagBytes;
+    unsigned char T[AES_BLOCK_SIZE];
+    const CK_GCM_MESSAGE_PARAMS *gcmParams =
+        (const CK_GCM_MESSAGE_PARAMS *)params;
+    SECStatus rv;
+
+    // GCM has a 16 octet block, with a 32-bit block counter
+    // Limit in accordance with SP800-38D
+    if (sizeof(inlen) > 4 &&
+        inlen >= ((1ULL << 32) - 2) * AES_BLOCK_SIZE) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+    /* paramLen comes all the way from the application layer, make sure
+     * it's correct */
+    if (paramLen != sizeof(CK_GCM_MESSAGE_PARAMS)) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        return SECFailure;
+    }
+
+    /* if we were initialized with the C_EncryptInit, we shouldn't be in this
+     * function */
+    if (gcm->ctr_context_init) {
+        PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
+        return SECFailure;
+    }
+
+    if (maxout < inlen) {
+        *outlen = inlen;
+        PORT_SetError(SEC_ERROR_OUTPUT_LEN);
+        return SECFailure;
+    }
+
+    rv = gcm_GenerateIV(&gcm->gcm_iv, gcmParams->pIv, gcmParams->ulIvLen,
+                        gcmParams->ulIvFixedBits, gcmParams->ivGenerator);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    rv = ppc_aes_gcmInitCounter(gcm, gcmParams->pIv, gcmParams->ulIvLen,
+                                gcmParams->ulTagBits, aad, aadLen);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    tagBytes = (gcm->tagBits + (PR_BITS_PER_BYTE - 1)) / PR_BITS_PER_BYTE;
+
+    ppc_aes_gcmCRYPT(inbuf, outbuf, inlen, gcm->CTR, gcm->aes_context->k.expandedKey,
+                     gcm->aes_context->Nr);
+    ppc_aes_gcmHASH(gcm->Htbl, outbuf, inlen, gcm->T);
+
+    gcm->Mlen += inlen;
+
+    ppc_aes_gcmTAG(gcm->Htbl, gcm->T, gcm->Mlen, gcm->Alen, gcm->X0, T);
+
+    *outlen = inlen;
+    PORT_Memcpy(gcmParams->pTag, T, tagBytes);
+    return SECSuccess;
+}
+
+SECStatus
+ppc_AES_GCM_DecryptAEAD(ppc_AES_GCMContext *gcm,
+                        unsigned char *outbuf,
+                        unsigned int *outlen, unsigned int maxout,
+                        const unsigned char *inbuf, unsigned int inlen,
+                        void *params, unsigned int paramLen,
+                        const unsigned char *aad, unsigned int aadLen,
+                        unsigned int blocksize)
+{
+    unsigned int tagBytes;
+    unsigned char T[AES_BLOCK_SIZE];
+    const unsigned char *intag;
+    const CK_GCM_MESSAGE_PARAMS *gcmParams =
+        (const CK_GCM_MESSAGE_PARAMS *)params;
+    SECStatus rv;
+
+    /* paramLen comes all the way from the application layer, make sure
+     * it's correct */
+    if (paramLen != sizeof(CK_GCM_MESSAGE_PARAMS)) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        return SECFailure;
+    }
+    /* if we were initialized with the C_DecryptInit, we shouldn't be in this
+     * function */
+    if (gcm->ctr_context_init) {
+        PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
+        return SECFailure;
+    }
+
+    // GCM has a 16 octet block, with a 32-bit block counter
+    // Limit in accordance with SP800-38D
+    if (sizeof(inlen) > 4 &&
+        inlen >= ((1ULL << 32) - 2) * AES_BLOCK_SIZE) {
+        PORT_SetError(SEC_ERROR_INPUT_LEN);
+        return SECFailure;
+    }
+
+    if (maxout < inlen) {
+        *outlen = inlen;
+        PORT_SetError(SEC_ERROR_OUTPUT_LEN);
+        return SECFailure;
+    }
+
+    rv = ppc_aes_gcmInitCounter(gcm, gcmParams->pIv, gcmParams->ulIvLen,
+                                gcmParams->ulTagBits, aad, aadLen);
+    if (rv != SECSuccess) {
+        return SECFailure;
+    }
+
+    tagBytes = (gcm->tagBits + (PR_BITS_PER_BYTE - 1)) / PR_BITS_PER_BYTE;
+    intag = gcmParams->pTag;
+    PORT_Assert(tagBytes != 0);
+
+    ppc_aes_gcmHASH(gcm->Htbl, inbuf, inlen, gcm->T);
+    ppc_aes_gcmCRYPT(inbuf, outbuf, inlen, gcm->CTR, gcm->aes_context->k.expandedKey,
+                     gcm->aes_context->Nr);
+
+    gcm->Mlen += inlen;
+    ppc_aes_gcmTAG(gcm->Htbl, gcm->T, gcm->Mlen, gcm->Alen, gcm->X0, T);
+
+    if (NSS_SecureMemcmp(T, intag, tagBytes) != 0) {
+        memset(outbuf, 0, inlen);
+        *outlen = 0;
+        /* force a CKR_ENCRYPTED_DATA_INVALID error at in softoken */
+        PORT_SetError(SEC_ERROR_BAD_DATA);
+        return SECFailure;
+    }
+    *outlen = inlen;
+
+    return SECSuccess;
+}