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openssl
openssl-Extended-OAEP-support.patch
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File openssl-Extended-OAEP-support.patch of Package openssl
From 271fef0ef39a1c0cb5233a5adf3ff8733abb375e Mon Sep 17 00:00:00 2001 From: "Dr. Stephen Henson" <steve@openssl.org> Date: Tue, 21 May 2013 23:55:50 +0100 Subject: [PATCH] Exetended OAEP support. Extend OAEP support. Generalise the OAEP padding functions to support arbitrary digests. Extend EVP_PKEY RSA method to handle the new OAEP padding functions and add ctrls to set the additional parameters. --- CHANGES | 4 ++ crypto/rsa/rsa.h | 28 +++++++++- crypto/rsa/rsa_err.c | 7 ++- crypto/rsa/rsa_oaep.c | 105 ++++++++++++++++++++++------------- crypto/rsa/rsa_pmeth.c | 121 +++++++++++++++++++++++++++++++++++++++-- 5 files changed, 217 insertions(+), 48 deletions(-) Index: openssl-1.0.1i/crypto/rsa/rsa.h =================================================================== --- openssl-1.0.1i.orig/crypto/rsa/rsa.h +++ openssl-1.0.1i/crypto/rsa/rsa.h @@ -249,13 +249,23 @@ struct rsa_st EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp) #define EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) \ - EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_SIG, \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \ + EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md) +#define EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ + EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md) + #define EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \ - EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_SIG, \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, \ + EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)pmd) +#define EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ + EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)l) + #define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1) #define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 2) @@ -267,6 +277,9 @@ struct rsa_st #define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 7) #define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 8) +#define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 9) +#define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 10) + #define RSA_PKCS1_PADDING 1 #define RSA_SSLV23_PADDING 2 #define RSA_NO_PADDING 3 @@ -400,6 +413,14 @@ int RSA_padding_add_PKCS1_OAEP(unsigned int RSA_padding_check_PKCS1_OAEP(unsigned char *to,int tlen, const unsigned char *f,int fl,int rsa_len, const unsigned char *p,int pl); +int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, + const unsigned char *from, int flen, + const unsigned char *param, int plen, + const EVP_MD *md, const EVP_MD *mgf1md); +int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, + const unsigned char *from, int flen, int num, + const unsigned char *param, int plen, + const EVP_MD *md, const EVP_MD *mgf1md); int RSA_padding_add_SSLv23(unsigned char *to,int tlen, const unsigned char *f,int fl); int RSA_padding_check_SSLv23(unsigned char *to,int tlen, @@ -493,6 +514,7 @@ void ERR_load_RSA_strings(void); #define RSA_F_RSA_NULL_PUBLIC_ENCRYPT 135 #define RSA_F_RSA_PADDING_ADD_NONE 107 #define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP 121 +#define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1 154 #define RSA_F_RSA_PADDING_ADD_PKCS1_PSS 125 #define RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1 158 #define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1 108 @@ -501,6 +523,7 @@ void ERR_load_RSA_strings(void); #define RSA_F_RSA_PADDING_ADD_X931 127 #define RSA_F_RSA_PADDING_CHECK_NONE 111 #define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP 122 +#define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1 153 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1 112 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2 113 #define RSA_F_RSA_PADDING_CHECK_SSLV23 114 @@ -544,6 +567,7 @@ void ERR_load_RSA_strings(void); #define RSA_R_D_E_NOT_CONGRUENT_TO_1 123 #define RSA_R_FIRST_OCTET_INVALID 133 #define RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE 144 +#define RSA_R_INVALID_DIGEST 157 #define RSA_R_INVALID_DIGEST_LENGTH 143 #define RSA_R_INVALID_HEADER 137 #define RSA_R_INVALID_KEYBITS 145 Index: openssl-1.0.1i/crypto/rsa/rsa_err.c =================================================================== --- openssl-1.0.1i.orig/crypto/rsa/rsa_err.c +++ openssl-1.0.1i/crypto/rsa/rsa_err.c @@ -99,6 +99,7 @@ static ERR_STRING_DATA RSA_str_functs[]= {ERR_FUNC(RSA_F_RSA_NULL_PUBLIC_ENCRYPT), "RSA_NULL_PUBLIC_ENCRYPT"}, {ERR_FUNC(RSA_F_RSA_PADDING_ADD_NONE), "RSA_padding_add_none"}, {ERR_FUNC(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP), "RSA_padding_add_PKCS1_OAEP"}, +{ERR_FUNC(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1), "RSA_padding_add_PKCS1_OAEP_mgf1"}, {ERR_FUNC(RSA_F_RSA_PADDING_ADD_PKCS1_PSS), "RSA_padding_add_PKCS1_PSS"}, {ERR_FUNC(RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1), "RSA_padding_add_PKCS1_PSS_mgf1"}, {ERR_FUNC(RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1), "RSA_padding_add_PKCS1_type_1"}, @@ -107,6 +108,7 @@ static ERR_STRING_DATA RSA_str_functs[]= {ERR_FUNC(RSA_F_RSA_PADDING_ADD_X931), "RSA_padding_add_X931"}, {ERR_FUNC(RSA_F_RSA_PADDING_CHECK_NONE), "RSA_padding_check_none"}, {ERR_FUNC(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP), "RSA_padding_check_PKCS1_OAEP"}, +{ERR_FUNC(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1), "RSA_padding_check_PKCS1_OAEP_mgf1"}, {ERR_FUNC(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1), "RSA_padding_check_PKCS1_type_1"}, {ERR_FUNC(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2), "RSA_padding_check_PKCS1_type_2"}, {ERR_FUNC(RSA_F_RSA_PADDING_CHECK_SSLV23), "RSA_padding_check_SSLv23"}, @@ -153,6 +155,7 @@ static ERR_STRING_DATA RSA_str_reasons[] {ERR_REASON(RSA_R_D_E_NOT_CONGRUENT_TO_1),"d e not congruent to 1"}, {ERR_REASON(RSA_R_FIRST_OCTET_INVALID) ,"first octet invalid"}, {ERR_REASON(RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE),"illegal or unsupported padding mode"}, +{ERR_REASON(RSA_R_INVALID_DIGEST) ,"invalid digest"}, {ERR_REASON(RSA_R_INVALID_DIGEST_LENGTH) ,"invalid digest length"}, {ERR_REASON(RSA_R_INVALID_HEADER) ,"invalid header"}, {ERR_REASON(RSA_R_INVALID_KEYBITS) ,"invalid keybits"}, Index: openssl-1.0.1i/crypto/rsa/rsa_oaep.c =================================================================== --- openssl-1.0.1i.orig/crypto/rsa/rsa_oaep.c +++ openssl-1.0.1i/crypto/rsa/rsa_oaep.c @@ -28,41 +28,55 @@ #include <openssl/rand.h> #include <openssl/sha.h> -static int MGF1(unsigned char *mask, long len, - const unsigned char *seed, long seedlen); - int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen, const unsigned char *from, int flen, const unsigned char *param, int plen) { + return RSA_padding_add_PKCS1_OAEP_mgf1(to, tlen, from, flen, + param, plen, NULL, NULL); + } + +int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, + const unsigned char *from, int flen, + const unsigned char *param, int plen, + const EVP_MD *md, const EVP_MD *mgf1md) + { int i, emlen = tlen - 1; unsigned char *db, *seed; - unsigned char *dbmask, seedmask[SHA_DIGEST_LENGTH]; + unsigned char *dbmask, seedmask[EVP_MAX_MD_SIZE]; + int mdlen; + + if (md == NULL) + md = EVP_sha1(); + if (mgf1md == NULL) + mgf1md = md; - if (flen > emlen - 2 * SHA_DIGEST_LENGTH - 1) + mdlen = EVP_MD_size(md); + + if (flen > emlen - 2 * mdlen - 1) { - RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP, + RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE); return 0; } - if (emlen < 2 * SHA_DIGEST_LENGTH + 1) + if (emlen < 2 * mdlen + 1) { - RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP, RSA_R_KEY_SIZE_TOO_SMALL); + RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1, RSA_R_KEY_SIZE_TOO_SMALL); return 0; } to[0] = 0; seed = to + 1; - db = to + SHA_DIGEST_LENGTH + 1; + db = to + mdlen + 1; - if (!EVP_Digest((void *)param, plen, db, NULL, EVP_sha1(), NULL)) + if (!EVP_Digest((void *)param, plen, db, NULL, md, NULL)) return 0; - memset(db + SHA_DIGEST_LENGTH, 0, - emlen - flen - 2 * SHA_DIGEST_LENGTH - 1); - db[emlen - flen - SHA_DIGEST_LENGTH - 1] = 0x01; - memcpy(db + emlen - flen - SHA_DIGEST_LENGTH, from, (unsigned int) flen); - if (RAND_bytes(seed, SHA_DIGEST_LENGTH) <= 0) + memset(db + mdlen, 0, + emlen - flen - 2 * mdlen - 1); + db[emlen - flen - mdlen - 1] = 0x01; + memcpy(db + emlen - flen - mdlen, from, (unsigned int) flen); + if (RAND_bytes(seed, mdlen) <= 0) return 0; #ifdef PKCS_TESTVECT memcpy(seed, @@ -70,21 +84,21 @@ int RSA_padding_add_PKCS1_OAEP(unsigned 20); #endif - dbmask = OPENSSL_malloc(emlen - SHA_DIGEST_LENGTH); + dbmask = OPENSSL_malloc(emlen - mdlen); if (dbmask == NULL) { - RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP, ERR_R_MALLOC_FAILURE); + RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1, ERR_R_MALLOC_FAILURE); return 0; } - if (MGF1(dbmask, emlen - SHA_DIGEST_LENGTH, seed, SHA_DIGEST_LENGTH) < 0) + if (PKCS1_MGF1(dbmask, emlen - mdlen, seed, mdlen, mgf1md) < 0) return 0; - for (i = 0; i < emlen - SHA_DIGEST_LENGTH; i++) + for (i = 0; i < emlen - mdlen; i++) db[i] ^= dbmask[i]; - if (MGF1(seedmask, SHA_DIGEST_LENGTH, db, emlen - SHA_DIGEST_LENGTH) < 0) + if (PKCS1_MGF1(seedmask, mdlen, db, emlen - mdlen, mgf1md) < 0) return 0; - for (i = 0; i < SHA_DIGEST_LENGTH; i++) + for (i = 0; i < mdlen; i++) seed[i] ^= seedmask[i]; OPENSSL_free(dbmask); @@ -95,14 +109,32 @@ int RSA_padding_check_PKCS1_OAEP(unsigne const unsigned char *from, int flen, int num, const unsigned char *param, int plen) { + return RSA_padding_check_PKCS1_OAEP_mgf1(to, tlen, from , flen, num, + param, plen, + NULL, NULL); + } + +int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen, + const unsigned char *from, int flen, int num, + const unsigned char *param, int plen, + const EVP_MD *md, const EVP_MD *mgf1md) + { int i, dblen, mlen = -1; const unsigned char *maskeddb; int lzero; - unsigned char *db = NULL, seed[SHA_DIGEST_LENGTH], phash[SHA_DIGEST_LENGTH]; + unsigned char *db = NULL, seed[EVP_MAX_MD_SIZE], phash[EVP_MAX_MD_SIZE]; unsigned char *padded_from; int bad = 0; + int mdlen; - if (--num < 2 * SHA_DIGEST_LENGTH + 1) + if (md == NULL) + md = EVP_sha1(); + if (mgf1md == NULL) + mgf1md = md; + + mdlen = EVP_MD_size(md); + + if (--num < 2 * mdlen + 1) /* 'num' is the length of the modulus, i.e. does not depend on the * particular ciphertext. */ goto decoding_err; @@ -120,11 +152,11 @@ int RSA_padding_check_PKCS1_OAEP(unsigne flen = num; /* don't overflow the memcpy to padded_from */ } - dblen = num - SHA_DIGEST_LENGTH; + dblen = num - mdlen; db = OPENSSL_malloc(dblen + num); if (db == NULL) { - RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP, ERR_R_MALLOC_FAILURE); + RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1, ERR_R_MALLOC_FAILURE); return -1; } @@ -134,26 +166,26 @@ int RSA_padding_check_PKCS1_OAEP(unsigne memset(padded_from, 0, lzero); memcpy(padded_from + lzero, from, flen); - maskeddb = padded_from + SHA_DIGEST_LENGTH; + maskeddb = padded_from + mdlen; - if (MGF1(seed, SHA_DIGEST_LENGTH, maskeddb, dblen)) + if (PKCS1_MGF1(seed, mdlen, maskeddb, dblen, mgf1md)) return -1; - for (i = 0; i < SHA_DIGEST_LENGTH; i++) + for (i = 0; i < mdlen; i++) seed[i] ^= padded_from[i]; - if (MGF1(db, dblen, seed, SHA_DIGEST_LENGTH)) + if (PKCS1_MGF1(db, dblen, seed, mdlen, mgf1md)) return -1; for (i = 0; i < dblen; i++) db[i] ^= maskeddb[i]; - if (!EVP_Digest((void *)param, plen, phash, NULL, EVP_sha1(), NULL)) + if (!EVP_Digest((void *)param, plen, phash, NULL, md, NULL)) return -1; - if (CRYPTO_memcmp(db, phash, SHA_DIGEST_LENGTH) != 0 || bad) + if (CRYPTO_memcmp(db, phash, mdlen) != 0 || bad) goto decoding_err; else { - for (i = SHA_DIGEST_LENGTH; i < dblen; i++) + for (i = mdlen; i < dblen; i++) if (db[i] != 0x00) break; if (i == dblen || db[i] != 0x01) @@ -165,7 +197,7 @@ int RSA_padding_check_PKCS1_OAEP(unsigne mlen = dblen - ++i; if (tlen < mlen) { - RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP, RSA_R_DATA_TOO_LARGE); + RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1, RSA_R_DATA_TOO_LARGE); mlen = -1; } else @@ -178,7 +210,7 @@ int RSA_padding_check_PKCS1_OAEP(unsigne decoding_err: /* to avoid chosen ciphertext attacks, the error message should not reveal * which kind of decoding error happened */ - RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP, RSA_R_OAEP_DECODING_ERROR); + RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1, RSA_R_OAEP_DECODING_ERROR); if (db != NULL) OPENSSL_free(db); return -1; } @@ -227,9 +259,4 @@ int PKCS1_MGF1(unsigned char *mask, long return rv; } -static int MGF1(unsigned char *mask, long len, const unsigned char *seed, - long seedlen) - { - return PKCS1_MGF1(mask, len, seed, seedlen, EVP_sha1()); - } #endif Index: openssl-1.0.1i/crypto/rsa/rsa_pmeth.c =================================================================== --- openssl-1.0.1i.orig/crypto/rsa/rsa_pmeth.c +++ openssl-1.0.1i/crypto/rsa/rsa_pmeth.c @@ -63,6 +63,7 @@ #include <openssl/rsa.h> #include <openssl/bn.h> #include <openssl/evp.h> +#include <openssl/x509v3.h> #ifndef OPENSSL_NO_CMS #include <openssl/cms.h> #endif @@ -87,10 +88,13 @@ typedef struct const EVP_MD *md; /* message digest for MGF1 */ const EVP_MD *mgf1md; - /* PSS/OAEP salt length */ + /* PSS salt length */ int saltlen; /* Temp buffer */ unsigned char *tbuf; + /* OAEP label */ + unsigned char *oaep_label; + size_t oaep_labellen; } RSA_PKEY_CTX; static int pkey_rsa_init(EVP_PKEY_CTX *ctx) @@ -108,6 +112,9 @@ static int pkey_rsa_init(EVP_PKEY_CTX *c rctx->saltlen = -2; + rctx->oaep_label = NULL; + rctx->oaep_labellen = 0; + ctx->data = rctx; ctx->keygen_info = rctx->gentmp; ctx->keygen_info_count = 2; @@ -131,6 +138,17 @@ static int pkey_rsa_copy(EVP_PKEY_CTX *d } dctx->pad_mode = sctx->pad_mode; dctx->md = sctx->md; + dctx->mgf1md = sctx->mgf1md; + if (sctx->oaep_label) + { + if (dctx->oaep_label) + OPENSSL_free(dctx->oaep_label); + dctx->oaep_label = BUF_memdup(sctx->oaep_label, + sctx->oaep_labellen); + if (!dctx->oaep_label) + return 0; + dctx->oaep_labellen = sctx->oaep_labellen; + } return 1; } @@ -153,6 +171,8 @@ static void pkey_rsa_cleanup(EVP_PKEY_CT BN_free(rctx->pub_exp); if (rctx->tbuf) OPENSSL_free(rctx->tbuf); + if (rctx->oaep_label) + OPENSSL_free(rctx->oaep_label); OPENSSL_free(rctx); } } @@ -382,7 +402,6 @@ static int pkey_rsa_verify(EVP_PKEY_CTX return 1; } - static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, @@ -390,7 +409,23 @@ static int pkey_rsa_encrypt(EVP_PKEY_CTX { int ret; RSA_PKEY_CTX *rctx = ctx->data; - ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, + if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) + { + int klen = RSA_size(ctx->pkey->pkey.rsa); + if (!setup_tbuf(rctx, ctx)) + return -1; + if (!RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, klen, + in, inlen, + rctx->oaep_label, + rctx->oaep_labellen, + rctx->md, rctx->mgf1md)) + return -1; + ret = RSA_public_encrypt(klen, rctx->tbuf, out, + ctx->pkey->pkey.rsa, + RSA_NO_PADDING); + } + else + ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, rctx->pad_mode); if (ret < 0) return ret; @@ -404,7 +439,29 @@ static int pkey_rsa_decrypt(EVP_PKEY_CTX { int ret; RSA_PKEY_CTX *rctx = ctx->data; - ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, + if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) + { + int i; + if (!setup_tbuf(rctx, ctx)) + return -1; + ret = RSA_private_decrypt(inlen, in, rctx->tbuf, + ctx->pkey->pkey.rsa, + RSA_NO_PADDING); + if (ret <= 0) + return ret; + for (i = 0; i < ret; i++) + { + if (rctx->tbuf[i]) + break; + } + ret = RSA_padding_check_PKCS1_OAEP_mgf1(out,ret,rctx->tbuf + i, + ret - i, ret, + rctx->oaep_label, + rctx->oaep_labellen, + rctx->md, rctx->mgf1md); + } + else + ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, rctx->pad_mode); if (ret < 0) return ret; @@ -504,9 +561,19 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *c case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: if (!p2) return -2; + BN_free(rctx->pub_exp); rctx->pub_exp = p2; return 1; + case EVP_PKEY_CTRL_RSA_OAEP_MD: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) + { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return 0; + } + rctx->md = p2; + return 1; + case EVP_PKEY_CTRL_MD: if (!check_padding_md(p2, rctx->pad_mode)) return 0; @@ -515,7 +582,8 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *c case EVP_PKEY_CTRL_RSA_MGF1_MD: case EVP_PKEY_CTRL_GET_RSA_MGF1_MD: - if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) + if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING + && rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD); return -2; @@ -531,6 +599,12 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *c rctx->mgf1md = p2; return 1; + case EVP_PKEY_CTRL_RSA_OAEP_LABEL: + OPENSSL_free(rctx->oaep_label); + rctx->oaep_label = p2; + rctx->oaep_labellen = p1; + return 1; + case EVP_PKEY_CTRL_DIGESTINIT: case EVP_PKEY_CTRL_PKCS7_ENCRYPT: case EVP_PKEY_CTRL_PKCS7_DECRYPT: @@ -623,6 +697,43 @@ static int pkey_rsa_ctrl_str(EVP_PKEY_CT return ret; } + if (!strcmp(type, "rsa_mgf1_md")) + { + const EVP_MD *md; + if (!(md = EVP_get_digestbyname(value))) + { + RSAerr(RSA_F_PKEY_RSA_CTRL_STR, + RSA_R_INVALID_DIGEST); + return 0; + } + return EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md); + } + + if (!strcmp(type, "rsa_oaep_md")) + { + const EVP_MD *md; + if (!(md = EVP_get_digestbyname(value))) + { + RSAerr(RSA_F_PKEY_RSA_CTRL_STR, + RSA_R_INVALID_DIGEST); + return 0; + } + return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md); + } + if (!strcmp(type, "rsa_oaep_label")) + { + unsigned char *lab; + long lablen; + int ret; + lab = string_to_hex(value, &lablen); + if (!lab) + return 0; + ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen); + if (ret <= 0) + OPENSSL_free(lab); + return ret; + } + return -2; }
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