diff options
Diffstat (limited to 'openssl/crypto/dsa/dsa_pmeth.c')
| -rw-r--r-- | openssl/crypto/dsa/dsa_pmeth.c | 464 |
1 files changed, 229 insertions, 235 deletions
diff --git a/openssl/crypto/dsa/dsa_pmeth.c b/openssl/crypto/dsa/dsa_pmeth.c index 715d8d675..42b8bb086 100644 --- a/openssl/crypto/dsa/dsa_pmeth.c +++ b/openssl/crypto/dsa/dsa_pmeth.c @@ -1,5 +1,6 @@ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 2006. +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project + * 2006. */ /* ==================================================================== * Copyright (c) 2006 The OpenSSL Project. All rights reserved. @@ -9,7 +10,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -66,253 +67,246 @@ /* DSA pkey context structure */ -typedef struct - { - /* Parameter gen parameters */ - int nbits; /* size of p in bits (default: 1024) */ - int qbits; /* size of q in bits (default: 160) */ - const EVP_MD *pmd; /* MD for parameter generation */ - /* Keygen callback info */ - int gentmp[2]; - /* message digest */ - const EVP_MD *md; /* MD for the signature */ - } DSA_PKEY_CTX; +typedef struct { + /* Parameter gen parameters */ + int nbits; /* size of p in bits (default: 1024) */ + int qbits; /* size of q in bits (default: 160) */ + const EVP_MD *pmd; /* MD for parameter generation */ + /* Keygen callback info */ + int gentmp[2]; + /* message digest */ + const EVP_MD *md; /* MD for the signature */ +} DSA_PKEY_CTX; static int pkey_dsa_init(EVP_PKEY_CTX *ctx) - { - DSA_PKEY_CTX *dctx; - dctx = OPENSSL_malloc(sizeof(DSA_PKEY_CTX)); - if (!dctx) - return 0; - dctx->nbits = 1024; - dctx->qbits = 160; - dctx->pmd = NULL; - dctx->md = NULL; - - ctx->data = dctx; - ctx->keygen_info = dctx->gentmp; - ctx->keygen_info_count = 2; - - return 1; - } +{ + DSA_PKEY_CTX *dctx; + dctx = OPENSSL_malloc(sizeof(DSA_PKEY_CTX)); + if (!dctx) + return 0; + dctx->nbits = 1024; + dctx->qbits = 160; + dctx->pmd = NULL; + dctx->md = NULL; + + ctx->data = dctx; + ctx->keygen_info = dctx->gentmp; + ctx->keygen_info_count = 2; + + return 1; +} static int pkey_dsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) - { - DSA_PKEY_CTX *dctx, *sctx; - if (!pkey_dsa_init(dst)) - return 0; - sctx = src->data; - dctx = dst->data; - dctx->nbits = sctx->nbits; - dctx->qbits = sctx->qbits; - dctx->pmd = sctx->pmd; - dctx->md = sctx->md; - return 1; - } +{ + DSA_PKEY_CTX *dctx, *sctx; + if (!pkey_dsa_init(dst)) + return 0; + sctx = src->data; + dctx = dst->data; + dctx->nbits = sctx->nbits; + dctx->qbits = sctx->qbits; + dctx->pmd = sctx->pmd; + dctx->md = sctx->md; + return 1; +} static void pkey_dsa_cleanup(EVP_PKEY_CTX *ctx) - { - DSA_PKEY_CTX *dctx = ctx->data; - if (dctx) - OPENSSL_free(dctx); - } - -static int pkey_dsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, - const unsigned char *tbs, size_t tbslen) - { - int ret, type; - unsigned int sltmp; - DSA_PKEY_CTX *dctx = ctx->data; - DSA *dsa = ctx->pkey->pkey.dsa; - - if (dctx->md) - type = EVP_MD_type(dctx->md); - else - type = NID_sha1; - - ret = DSA_sign(type, tbs, tbslen, sig, &sltmp, dsa); - - if (ret <= 0) - return ret; - *siglen = sltmp; - return 1; - } +{ + DSA_PKEY_CTX *dctx = ctx->data; + if (dctx) + OPENSSL_free(dctx); +} + +static int pkey_dsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, + size_t *siglen, const unsigned char *tbs, + size_t tbslen) +{ + int ret, type; + unsigned int sltmp; + DSA_PKEY_CTX *dctx = ctx->data; + DSA *dsa = ctx->pkey->pkey.dsa; + + if (dctx->md) + type = EVP_MD_type(dctx->md); + else + type = NID_sha1; + + ret = DSA_sign(type, tbs, tbslen, sig, &sltmp, dsa); + + if (ret <= 0) + return ret; + *siglen = sltmp; + return 1; +} static int pkey_dsa_verify(EVP_PKEY_CTX *ctx, - const unsigned char *sig, size_t siglen, - const unsigned char *tbs, size_t tbslen) - { - int ret, type; - DSA_PKEY_CTX *dctx = ctx->data; - DSA *dsa = ctx->pkey->pkey.dsa; + const unsigned char *sig, size_t siglen, + const unsigned char *tbs, size_t tbslen) +{ + int ret, type; + DSA_PKEY_CTX *dctx = ctx->data; + DSA *dsa = ctx->pkey->pkey.dsa; - if (dctx->md) - type = EVP_MD_type(dctx->md); - else - type = NID_sha1; + if (dctx->md) + type = EVP_MD_type(dctx->md); + else + type = NID_sha1; - ret = DSA_verify(type, tbs, tbslen, sig, siglen, dsa); + ret = DSA_verify(type, tbs, tbslen, sig, siglen, dsa); - return ret; - } + return ret; +} static int pkey_dsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) - { - DSA_PKEY_CTX *dctx = ctx->data; - switch (type) - { - case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS: - if (p1 < 256) - return -2; - dctx->nbits = p1; - return 1; - - case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS: - if (p1 != 160 && p1 != 224 && p1 && p1 != 256) - return -2; - dctx->qbits = p1; - return 1; - - case EVP_PKEY_CTRL_DSA_PARAMGEN_MD: - if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && - EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && - EVP_MD_type((const EVP_MD *)p2) != NID_sha256) - { - DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); - return 0; - } - dctx->md = p2; - return 1; - - case EVP_PKEY_CTRL_MD: - if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && - EVP_MD_type((const EVP_MD *)p2) != NID_dsa && - EVP_MD_type((const EVP_MD *)p2) != NID_dsaWithSHA && - EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && - EVP_MD_type((const EVP_MD *)p2) != NID_sha256 && - EVP_MD_type((const EVP_MD *)p2) != NID_sha384 && - EVP_MD_type((const EVP_MD *)p2) != NID_sha512) - { - DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); - return 0; - } - dctx->md = p2; - return 1; - - case EVP_PKEY_CTRL_DIGESTINIT: - case EVP_PKEY_CTRL_PKCS7_SIGN: - case EVP_PKEY_CTRL_CMS_SIGN: - return 1; - - case EVP_PKEY_CTRL_PEER_KEY: - DSAerr(DSA_F_PKEY_DSA_CTRL, - EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); - return -2; - default: - return -2; - - } - } - +{ + DSA_PKEY_CTX *dctx = ctx->data; + switch (type) { + case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS: + if (p1 < 256) + return -2; + dctx->nbits = p1; + return 1; + + case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS: + if (p1 != 160 && p1 != 224 && p1 && p1 != 256) + return -2; + dctx->qbits = p1; + return 1; + + case EVP_PKEY_CTRL_DSA_PARAMGEN_MD: + if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && + EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && + EVP_MD_type((const EVP_MD *)p2) != NID_sha256) { + DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); + return 0; + } + dctx->md = p2; + return 1; + + case EVP_PKEY_CTRL_MD: + if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 && + EVP_MD_type((const EVP_MD *)p2) != NID_dsa && + EVP_MD_type((const EVP_MD *)p2) != NID_dsaWithSHA && + EVP_MD_type((const EVP_MD *)p2) != NID_sha224 && + EVP_MD_type((const EVP_MD *)p2) != NID_sha256 && + EVP_MD_type((const EVP_MD *)p2) != NID_sha384 && + EVP_MD_type((const EVP_MD *)p2) != NID_sha512) { + DSAerr(DSA_F_PKEY_DSA_CTRL, DSA_R_INVALID_DIGEST_TYPE); + return 0; + } + dctx->md = p2; + return 1; + + case EVP_PKEY_CTRL_GET_MD: + *(const EVP_MD **)p2 = dctx->md; + return 1; + + case EVP_PKEY_CTRL_DIGESTINIT: + case EVP_PKEY_CTRL_PKCS7_SIGN: + case EVP_PKEY_CTRL_CMS_SIGN: + return 1; + + case EVP_PKEY_CTRL_PEER_KEY: + DSAerr(DSA_F_PKEY_DSA_CTRL, + EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); + return -2; + default: + return -2; + + } +} + static int pkey_dsa_ctrl_str(EVP_PKEY_CTX *ctx, - const char *type, const char *value) - { - if (!strcmp(type, "dsa_paramgen_bits")) - { - int nbits; - nbits = atoi(value); - return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits); - } - if (!strcmp(type, "dsa_paramgen_q_bits")) - { - int qbits = atoi(value); - return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, - EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS, qbits, NULL); - } - if (!strcmp(type, "dsa_paramgen_md")) - { - return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, - EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, - (void *)EVP_get_digestbyname(value)); - } - return -2; - } + const char *type, const char *value) +{ + if (!strcmp(type, "dsa_paramgen_bits")) { + int nbits; + nbits = atoi(value); + return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits); + } + if (!strcmp(type, "dsa_paramgen_q_bits")) { + int qbits = atoi(value); + return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, + EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS, qbits, + NULL); + } + if (!strcmp(type, "dsa_paramgen_md")) { + return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, + EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, + (void *)EVP_get_digestbyname(value)); + } + return -2; +} static int pkey_dsa_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) - { - DSA *dsa = NULL; - DSA_PKEY_CTX *dctx = ctx->data; - BN_GENCB *pcb, cb; - int ret; - if (ctx->pkey_gencb) - { - pcb = &cb; - evp_pkey_set_cb_translate(pcb, ctx); - } - else - pcb = NULL; - dsa = DSA_new(); - if (!dsa) - return 0; - ret = dsa_builtin_paramgen(dsa, dctx->nbits, dctx->qbits, dctx->pmd, - NULL, 0, NULL, NULL, NULL, pcb); - if (ret) - EVP_PKEY_assign_DSA(pkey, dsa); - else - DSA_free(dsa); - return ret; - } +{ + DSA *dsa = NULL; + DSA_PKEY_CTX *dctx = ctx->data; + BN_GENCB *pcb, cb; + int ret; + if (ctx->pkey_gencb) { + pcb = &cb; + evp_pkey_set_cb_translate(pcb, ctx); + } else + pcb = NULL; + dsa = DSA_new(); + if (!dsa) + return 0; + ret = dsa_builtin_paramgen(dsa, dctx->nbits, dctx->qbits, dctx->pmd, + NULL, 0, NULL, NULL, NULL, pcb); + if (ret) + EVP_PKEY_assign_DSA(pkey, dsa); + else + DSA_free(dsa); + return ret; +} static int pkey_dsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) - { - DSA *dsa = NULL; - if (ctx->pkey == NULL) - { - DSAerr(DSA_F_PKEY_DSA_KEYGEN, DSA_R_NO_PARAMETERS_SET); - return 0; - } - dsa = DSA_new(); - if (!dsa) - return 0; - EVP_PKEY_assign_DSA(pkey, dsa); - /* Note: if error return, pkey is freed by parent routine */ - if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey)) - return 0; - return DSA_generate_key(pkey->pkey.dsa); - } - -const EVP_PKEY_METHOD dsa_pkey_meth = - { - EVP_PKEY_DSA, - EVP_PKEY_FLAG_AUTOARGLEN, - pkey_dsa_init, - pkey_dsa_copy, - pkey_dsa_cleanup, - - 0, - pkey_dsa_paramgen, - - 0, - pkey_dsa_keygen, - - 0, - pkey_dsa_sign, - - 0, - pkey_dsa_verify, - - 0,0, - - 0,0,0,0, - - 0,0, - - 0,0, - - 0,0, - - pkey_dsa_ctrl, - pkey_dsa_ctrl_str - - - }; +{ + DSA *dsa = NULL; + if (ctx->pkey == NULL) { + DSAerr(DSA_F_PKEY_DSA_KEYGEN, DSA_R_NO_PARAMETERS_SET); + return 0; + } + dsa = DSA_new(); + if (!dsa) + return 0; + EVP_PKEY_assign_DSA(pkey, dsa); + /* Note: if error return, pkey is freed by parent routine */ + if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey)) + return 0; + return DSA_generate_key(pkey->pkey.dsa); +} + +const EVP_PKEY_METHOD dsa_pkey_meth = { + EVP_PKEY_DSA, + EVP_PKEY_FLAG_AUTOARGLEN, + pkey_dsa_init, + pkey_dsa_copy, + pkey_dsa_cleanup, + + 0, + pkey_dsa_paramgen, + + 0, + pkey_dsa_keygen, + + 0, + pkey_dsa_sign, + + 0, + pkey_dsa_verify, + + 0, 0, + + 0, 0, 0, 0, + + 0, 0, + + 0, 0, + + 0, 0, + + pkey_dsa_ctrl, + pkey_dsa_ctrl_str +}; |