diff options
Diffstat (limited to 'crypto/rsa/rsa_pmeth.c')
| -rw-r--r-- | crypto/rsa/rsa_pmeth.c | 159 |
1 files changed, 139 insertions, 20 deletions
diff --git a/crypto/rsa/rsa_pmeth.c b/crypto/rsa/rsa_pmeth.c index 6a7c67cdb86c..203635595f4c 100644 --- a/crypto/rsa/rsa_pmeth.c +++ b/crypto/rsa/rsa_pmeth.c @@ -64,6 +64,7 @@ #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 *ctx) rctx->saltlen = -2; + rctx->oaep_label = NULL; + rctx->oaep_labellen = 0; + ctx->data = rctx; ctx->keygen_info = rctx->gentmp; ctx->keygen_info_count = 2; @@ -130,6 +137,15 @@ static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) } 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; } @@ -151,6 +167,8 @@ static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) BN_free(rctx->pub_exp); if (rctx->tbuf) OPENSSL_free(rctx->tbuf); + if (rctx->oaep_label) + OPENSSL_free(rctx->oaep_label); OPENSSL_free(rctx); } } @@ -173,10 +191,18 @@ static int pkey_fips_check_ctx(EVP_PKEY_CTX *ctx) rv = 0; if (!(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) && rv) return -1; - if (rctx->md && !(rctx->md->flags & EVP_MD_FLAG_FIPS)) - return rv; - if (rctx->mgf1md && !(rctx->mgf1md->flags & EVP_MD_FLAG_FIPS)) - return rv; + if (rctx->md) { + const EVP_MD *fmd; + fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->md)); + if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) + return rv; + } + if (rctx->mgf1md && !(rctx->mgf1md->flags & EVP_MD_FLAG_FIPS)) { + const EVP_MD *fmd; + fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->mgf1md)); + if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) + return rv; + } return 1; } #endif @@ -388,8 +414,21 @@ static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, { int ret; RSA_PKEY_CTX *rctx = ctx->data; - ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, - rctx->pad_mode); + 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; *outlen = ret; @@ -402,8 +441,26 @@ static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, { int ret; RSA_PKEY_CTX *rctx = ctx->data; - ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, - rctx->pad_mode); + 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; *outlen = ret; @@ -490,18 +547,36 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) 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: + case EVP_PKEY_CTRL_GET_RSA_OAEP_MD: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) + *(const EVP_MD **)p2 = rctx->md; + else + rctx->md = p2; + return 1; + case EVP_PKEY_CTRL_MD: if (!check_padding_md(p2, rctx->pad_mode)) return 0; rctx->md = p2; return 1; + case EVP_PKEY_CTRL_GET_MD: + *(const EVP_MD **)p2 = rctx->md; + return 1; + 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; } @@ -514,6 +589,30 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) rctx->mgf1md = p2; return 1; + case EVP_PKEY_CTRL_RSA_OAEP_LABEL: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + if (rctx->oaep_label) + OPENSSL_free(rctx->oaep_label); + if (p2 && p1 > 0) { + rctx->oaep_label = p2; + rctx->oaep_labellen = p1; + } else { + rctx->oaep_label = NULL; + rctx->oaep_labellen = 0; + } + return 1; + + case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + *(unsigned char **)p2 = rctx->oaep_label; + return rctx->oaep_labellen; + case EVP_PKEY_CTRL_DIGESTINIT: case EVP_PKEY_CTRL_PKCS7_ENCRYPT: case EVP_PKEY_CTRL_PKCS7_DECRYPT: @@ -521,16 +620,6 @@ static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) return 1; #ifndef OPENSSL_NO_CMS case EVP_PKEY_CTRL_CMS_DECRYPT: - { - X509_ALGOR *alg = NULL; - ASN1_OBJECT *encalg = NULL; - if (p2) - CMS_RecipientInfo_ktri_get0_algs(p2, NULL, NULL, &alg); - if (alg) - X509_ALGOR_get0(&encalg, NULL, NULL, alg); - if (encalg && OBJ_obj2nid(encalg) == NID_rsaesOaep) - rctx->pad_mode = RSA_PKCS1_OAEP_PADDING; - } case EVP_PKEY_CTRL_CMS_ENCRYPT: case EVP_PKEY_CTRL_CMS_SIGN: return 1; @@ -599,6 +688,36 @@ static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx, 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; } |