From 5e45211a64149b3c659b90ff2de6fa982a5a93ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 14:17:33 +0200 Subject: Adding upstream version 15.5. Signed-off-by: Daniel Baumann --- contrib/pgcrypto/pgp.h | 327 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 contrib/pgcrypto/pgp.h (limited to 'contrib/pgcrypto/pgp.h') diff --git a/contrib/pgcrypto/pgp.h b/contrib/pgcrypto/pgp.h new file mode 100644 index 0000000..f338523 --- /dev/null +++ b/contrib/pgcrypto/pgp.h @@ -0,0 +1,327 @@ +/* + * pgp.h + * OpenPGP implementation. + * + * Copyright (c) 2005 Marko Kreen + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * contrib/pgcrypto/pgp.h + */ + +#include "lib/stringinfo.h" + +#include "mbuf.h" +#include "px.h" + +enum PGP_S2K_TYPE +{ + PGP_S2K_SIMPLE = 0, + PGP_S2K_SALTED = 1, + PGP_S2K_ISALTED = 3 +}; + +enum PGP_PKT_TYPE +{ + PGP_PKT_RESERVED = 0, + PGP_PKT_PUBENCRYPTED_SESSKEY = 1, + PGP_PKT_SIGNATURE = 2, + PGP_PKT_SYMENCRYPTED_SESSKEY = 3, + PGP_PKT_SECRET_KEY = 5, + PGP_PKT_PUBLIC_KEY = 6, + PGP_PKT_SECRET_SUBKEY = 7, + PGP_PKT_COMPRESSED_DATA = 8, + PGP_PKT_SYMENCRYPTED_DATA = 9, + PGP_PKT_MARKER = 10, + PGP_PKT_LITERAL_DATA = 11, + PGP_PKT_TRUST = 12, + PGP_PKT_USER_ID = 13, + PGP_PKT_PUBLIC_SUBKEY = 14, + PGP_PKT_USER_ATTR = 17, + PGP_PKT_SYMENCRYPTED_DATA_MDC = 18, + PGP_PKT_MDC = 19, + PGP_PKT_PRIV_61 = 61 /* occurs in gpg secring */ +}; + +enum PGP_PUB_ALGO_TYPE +{ + PGP_PUB_RSA_ENCRYPT_SIGN = 1, + PGP_PUB_RSA_ENCRYPT = 2, + PGP_PUB_RSA_SIGN = 3, + PGP_PUB_ELG_ENCRYPT = 16, + PGP_PUB_DSA_SIGN = 17 +}; + +enum PGP_SYMENC_TYPE +{ + PGP_SYM_PLAIN = 0, /* ?? */ + PGP_SYM_IDEA = 1, /* obsolete, PGP 2.6 compat */ + PGP_SYM_DES3 = 2, /* must */ + PGP_SYM_CAST5 = 3, /* should */ + PGP_SYM_BLOWFISH = 4, + PGP_SYM_SAFER_SK128 = 5, /* obsolete */ + PGP_SYM_DES_SK = 6, /* obsolete */ + PGP_SYM_AES_128 = 7, /* should */ + PGP_SYM_AES_192 = 8, + PGP_SYM_AES_256 = 9, + PGP_SYM_TWOFISH = 10 +}; + +enum PGP_COMPR_TYPE +{ + PGP_COMPR_NONE = 0, /* must */ + PGP_COMPR_ZIP = 1, /* should */ + PGP_COMPR_ZLIB = 2, + PGP_COMPR_BZIP2 = 3 +}; + +enum PGP_DIGEST_TYPE +{ + PGP_DIGEST_MD5 = 1, /* should, deprecated */ + PGP_DIGEST_SHA1 = 2, /* must */ + PGP_DIGEST_RIPEMD160 = 3, + PGP_DIGEST_XSHA = 4, /* obsolete */ + PGP_DIGEST_MD2 = 5, /* obsolete */ + PGP_DIGEST_TIGER192 = 6, /* obsolete */ + PGP_DIGEST_HAVAL5_160 = 7, /* obsolete */ + PGP_DIGEST_SHA256 = 8, + PGP_DIGEST_SHA384 = 9, + PGP_DIGEST_SHA512 = 10 +}; + +#define PGP_MAX_KEY (256/8) +#define PGP_MAX_BLOCK (256/8) +#define PGP_MAX_DIGEST (512/8) +#define PGP_S2K_SALT 8 + +typedef struct PGP_MPI PGP_MPI; +typedef struct PGP_PubKey PGP_PubKey; +typedef struct PGP_Context PGP_Context; +typedef struct PGP_S2K PGP_S2K; + +struct PGP_S2K +{ + uint8 mode; + uint8 digest_algo; + uint8 salt[8]; + uint8 iter; /* encoded (one-octet) count */ + /* calculated: */ + uint8 key[PGP_MAX_KEY]; + uint8 key_len; +}; + + +struct PGP_Context +{ + /* + * parameters + */ + PGP_S2K s2k; + int s2k_mode; + int s2k_count; /* 4-byte decoded count */ + int s2k_digest_algo; + int s2k_cipher_algo; + int cipher_algo; + int compress_algo; + int compress_level; + int disable_mdc; + int use_sess_key; + int text_mode; + int convert_crlf; + int unicode_mode; + + /* + * internal variables + */ + int mdc_checked; + int corrupt_prefix; /* prefix failed RFC 4880 "quick check" */ + int unsupported_compr; /* has bzip2 compression */ + int unexpected_binary; /* binary data seen in text_mode */ + int in_mdc_pkt; + int use_mdcbuf_filter; + PX_MD *mdc_ctx; + + PGP_PubKey *pub_key; /* ctx owns it */ + const uint8 *sym_key; /* ctx does not own it */ + int sym_key_len; + + /* + * read or generated data + */ + uint8 sess_key[PGP_MAX_KEY]; + unsigned sess_key_len; +}; + +/* from RFC 4880 3.7.1.3 */ +#define s2k_decode_count(cval) \ + (((unsigned) 16 + (cval & 15)) << ((cval >> 4) + 6)) + +struct PGP_MPI +{ + uint8 *data; + int bits; + int bytes; +}; + +struct PGP_PubKey +{ + uint8 ver; + uint8 time[4]; + uint8 algo; + + /* public part */ + union + { + struct + { + PGP_MPI *p; + PGP_MPI *g; + PGP_MPI *y; + } elg; + struct + { + PGP_MPI *n; + PGP_MPI *e; + } rsa; + struct + { + PGP_MPI *p; + PGP_MPI *q; + PGP_MPI *g; + PGP_MPI *y; + } dsa; + } pub; + + /* secret part */ + union + { + struct + { + PGP_MPI *x; + } elg; + struct + { + PGP_MPI *d; + PGP_MPI *p; + PGP_MPI *q; + PGP_MPI *u; + } rsa; + struct + { + PGP_MPI *x; + } dsa; + } sec; + + uint8 key_id[8]; + int can_encrypt; +}; + +int pgp_init(PGP_Context **ctx); +int pgp_encrypt(PGP_Context *ctx, MBuf *src, MBuf *dst); +int pgp_decrypt(PGP_Context *ctx, MBuf *src, MBuf *dst); +int pgp_free(PGP_Context *ctx); + +int pgp_get_digest_code(const char *name); +int pgp_get_cipher_code(const char *name); +const char *pgp_get_digest_name(int code); +const char *pgp_get_cipher_name(int code); + +int pgp_set_cipher_algo(PGP_Context *ctx, const char *name); +int pgp_set_s2k_mode(PGP_Context *ctx, int type); +int pgp_set_s2k_count(PGP_Context *ctx, int count); +int pgp_set_s2k_cipher_algo(PGP_Context *ctx, const char *name); +int pgp_set_s2k_digest_algo(PGP_Context *ctx, const char *name); +int pgp_set_convert_crlf(PGP_Context *ctx, int doit); +int pgp_disable_mdc(PGP_Context *ctx, int disable); +int pgp_set_sess_key(PGP_Context *ctx, int use); +int pgp_set_compress_algo(PGP_Context *ctx, int algo); +int pgp_set_compress_level(PGP_Context *ctx, int level); +int pgp_set_text_mode(PGP_Context *ctx, int mode); +int pgp_set_unicode_mode(PGP_Context *ctx, int mode); +int pgp_get_unicode_mode(PGP_Context *ctx); + +int pgp_set_symkey(PGP_Context *ctx, const uint8 *key, int klen); +int pgp_set_pubkey(PGP_Context *ctx, MBuf *keypkt, + const uint8 *key, int klen, int pubtype); + +int pgp_get_keyid(MBuf *pgp_data, char *dst); + +/* internal functions */ + +int pgp_load_digest(int c, PX_MD **res); +int pgp_load_cipher(int c, PX_Cipher **res); +int pgp_get_cipher_key_size(int c); +int pgp_get_cipher_block_size(int c); + +int pgp_s2k_fill(PGP_S2K *s2k, int mode, int digest_algo, int count); +int pgp_s2k_read(PullFilter *src, PGP_S2K *s2k); +int pgp_s2k_process(PGP_S2K *s2k, int cipher, const uint8 *key, int klen); + +typedef struct PGP_CFB PGP_CFB; +int pgp_cfb_create(PGP_CFB **ctx_p, int algo, + const uint8 *key, int key_len, int resync, uint8 *iv); +void pgp_cfb_free(PGP_CFB *ctx); +int pgp_cfb_encrypt(PGP_CFB *ctx, const uint8 *data, int len, uint8 *dst); +int pgp_cfb_decrypt(PGP_CFB *ctx, const uint8 *data, int len, uint8 *dst); + +void pgp_armor_encode(const uint8 *src, unsigned len, StringInfo dst, + int num_headers, char **keys, char **values); +int pgp_armor_decode(const uint8 *src, int len, StringInfo dst); +int pgp_extract_armor_headers(const uint8 *src, unsigned len, + int *nheaders, char ***keys, char ***values); + +int pgp_compress_filter(PushFilter **res, PGP_Context *ctx, PushFilter *dst); +int pgp_decompress_filter(PullFilter **res, PGP_Context *ctx, PullFilter *src); + +int pgp_key_alloc(PGP_PubKey **pk_p); +void pgp_key_free(PGP_PubKey *pk); +int _pgp_read_public_key(PullFilter *pkt, PGP_PubKey **pk_p); + +int pgp_parse_pubenc_sesskey(PGP_Context *ctx, PullFilter *pkt); +int pgp_create_pkt_reader(PullFilter **pf_p, PullFilter *src, int len, + int pkttype, PGP_Context *ctx); +int pgp_parse_pkt_hdr(PullFilter *src, uint8 *tag, int *len_p, + int allow_ctx); + +int pgp_skip_packet(PullFilter *pkt); +int pgp_expect_packet_end(PullFilter *pkt); + +int pgp_write_pubenc_sesskey(PGP_Context *ctx, PushFilter *dst); +int pgp_create_pkt_writer(PushFilter *dst, int tag, PushFilter **res_p); + +int pgp_mpi_alloc(int bits, PGP_MPI **mpi); +int pgp_mpi_create(uint8 *data, int bits, PGP_MPI **mpi); +int pgp_mpi_free(PGP_MPI *mpi); +int pgp_mpi_read(PullFilter *src, PGP_MPI **mpi); +int pgp_mpi_write(PushFilter *dst, PGP_MPI *n); +int pgp_mpi_hash(PX_MD *md, PGP_MPI *n); +unsigned pgp_mpi_cksum(unsigned cksum, PGP_MPI *n); + +int pgp_elgamal_encrypt(PGP_PubKey *pk, PGP_MPI *m, + PGP_MPI **c1, PGP_MPI **c2); +int pgp_elgamal_decrypt(PGP_PubKey *pk, PGP_MPI *c1, PGP_MPI *c2, + PGP_MPI **m); +int pgp_rsa_encrypt(PGP_PubKey *pk, PGP_MPI *m, PGP_MPI **c); +int pgp_rsa_decrypt(PGP_PubKey *pk, PGP_MPI *c, PGP_MPI **m); + +extern struct PullFilterOps pgp_decrypt_filter; -- cgit v1.2.3