/*
- * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2006-2023 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
+/*
+ * RSA low level APIs are deprecated for public use, but still ok for
+ * internal use.
+ */
+#include "internal/deprecated.h"
+
+#include "internal/constant_time.h"
+
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/evp.h>
#include <openssl/x509v3.h>
#include <openssl/cms.h>
-#include "internal/evp_int.h"
-#include "rsa_locl.h"
+#include "crypto/evp.h"
+#include "crypto/rsa.h"
+#include "rsa_local.h"
/* RSA pkey context structure */
/* Key gen parameters */
int nbits;
BIGNUM *pub_exp;
+ int primes;
/* Keygen callback info */
int gentmp[2];
/* RSA padding mode */
const EVP_MD *mgf1md;
/* PSS salt length */
int saltlen;
+ /* Minimum salt length or -1 if no PSS parameter restriction */
+ int min_saltlen;
/* Temp buffer */
unsigned char *tbuf;
/* OAEP label */
unsigned char *oaep_label;
size_t oaep_labellen;
+ /* if to use implicit rejection in PKCS#1 v1.5 decryption */
+ int implicit_rejection;
} RSA_PKEY_CTX;
+/* True if PSS parameters are restricted */
+#define rsa_pss_restricted(rctx) (rctx->min_saltlen != -1)
+
static int pkey_rsa_init(EVP_PKEY_CTX *ctx)
{
- RSA_PKEY_CTX *rctx;
- rctx = OPENSSL_zalloc(sizeof(*rctx));
+ RSA_PKEY_CTX *rctx = OPENSSL_zalloc(sizeof(*rctx));
+
if (rctx == NULL)
return 0;
- rctx->nbits = 1024;
- if (ctx->pmeth->pkey_id == EVP_PKEY_RSA_PSS)
+ rctx->nbits = 2048;
+ rctx->primes = RSA_DEFAULT_PRIME_NUM;
+ if (pkey_ctx_is_pss(ctx))
rctx->pad_mode = RSA_PKCS1_PSS_PADDING;
else
rctx->pad_mode = RSA_PKCS1_PADDING;
- rctx->saltlen = -2;
+ /* Maximum for sign, auto for verify */
+ rctx->saltlen = RSA_PSS_SALTLEN_AUTO;
+ rctx->min_saltlen = -1;
+ rctx->implicit_rejection = 1;
ctx->data = rctx;
ctx->keygen_info = rctx->gentmp;
ctx->keygen_info_count = 2;
return 1;
}
-static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+static int pkey_rsa_copy(EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src)
{
RSA_PKEY_CTX *dctx, *sctx;
+
if (!pkey_rsa_init(dst))
return 0;
sctx = src->data;
dctx->pad_mode = sctx->pad_mode;
dctx->md = sctx->md;
dctx->mgf1md = sctx->mgf1md;
+ dctx->saltlen = sctx->saltlen;
+ dctx->implicit_rejection = sctx->implicit_rejection;
if (sctx->oaep_label) {
OPENSSL_free(dctx->oaep_label);
dctx->oaep_label = OPENSSL_memdup(sctx->oaep_label, sctx->oaep_labellen);
static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk)
{
- if (ctx->tbuf)
+ if (ctx->tbuf != NULL)
return 1;
- ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey));
- if (ctx->tbuf == NULL)
+ if ((ctx->tbuf =
+ OPENSSL_malloc(RSA_size(EVP_PKEY_get0_RSA(pk->pkey)))) == NULL)
return 0;
return 1;
}
{
int ret;
RSA_PKEY_CTX *rctx = ctx->data;
- RSA *rsa = ctx->pkey->pkey.rsa;
+ /*
+ * Discard const. Its marked as const because this may be a cached copy of
+ * the "real" key. These calls don't make any modifications that need to
+ * be reflected back in the "original" key.
+ */
+ RSA *rsa = (RSA *)EVP_PKEY_get0_RSA(ctx->pkey);
+ int md_size;
if (rctx->md) {
- if (tbslen != (size_t)EVP_MD_size(rctx->md)) {
- RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_INVALID_DIGEST_LENGTH);
+ md_size = EVP_MD_get_size(rctx->md);
+ if (md_size <= 0) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
return -1;
}
- if (EVP_MD_type(rctx->md) == NID_mdc2) {
+ if (tbslen != (size_t)md_size) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
+ return -1;
+ }
+
+ if (EVP_MD_get_type(rctx->md) == NID_mdc2) {
unsigned int sltmp;
if (rctx->pad_mode != RSA_PKCS1_PADDING)
return -1;
- ret = RSA_sign_ASN1_OCTET_STRING(0,
- tbs, tbslen, sig, &sltmp, rsa);
+ ret = RSA_sign_ASN1_OCTET_STRING(0, tbs, tbslen, sig, &sltmp, rsa);
if (ret <= 0)
return ret;
ret = sltmp;
} else if (rctx->pad_mode == RSA_X931_PADDING) {
- if ((size_t)EVP_PKEY_size(ctx->pkey) < tbslen + 1) {
- RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_KEY_SIZE_TOO_SMALL);
+ if ((size_t)RSA_size(rsa) < tbslen + 1) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_KEY_SIZE_TOO_SMALL);
return -1;
}
if (!setup_tbuf(rctx, ctx)) {
- RSAerr(RSA_F_PKEY_RSA_SIGN, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_RSA, ERR_R_RSA_LIB);
return -1;
}
memcpy(rctx->tbuf, tbs, tbslen);
- rctx->tbuf[tbslen] = RSA_X931_hash_id(EVP_MD_type(rctx->md));
+ rctx->tbuf[tbslen] = RSA_X931_hash_id(EVP_MD_get_type(rctx->md));
ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf,
sig, rsa, RSA_X931_PADDING);
} else if (rctx->pad_mode == RSA_PKCS1_PADDING) {
unsigned int sltmp;
- ret = RSA_sign(EVP_MD_type(rctx->md),
+ ret = RSA_sign(EVP_MD_get_type(rctx->md),
tbs, tbslen, sig, &sltmp, rsa);
if (ret <= 0)
return ret;
return -1;
ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf,
sig, rsa, RSA_NO_PADDING);
- } else
+ } else {
return -1;
- } else
- ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa,
- rctx->pad_mode);
+ }
+ } else {
+ ret = RSA_private_encrypt(tbslen, tbs, sig, rsa, rctx->pad_mode);
+ }
if (ret < 0)
return ret;
*siglen = ret;
{
int ret;
RSA_PKEY_CTX *rctx = ctx->data;
+ /*
+ * Discard const. Its marked as const because this may be a cached copy of
+ * the "real" key. These calls don't make any modifications that need to
+ * be reflected back in the "original" key.
+ */
+ RSA *rsa = (RSA *)EVP_PKEY_get0_RSA(ctx->pkey);
if (rctx->md) {
if (rctx->pad_mode == RSA_X931_PADDING) {
if (!setup_tbuf(rctx, ctx))
return -1;
- ret = RSA_public_decrypt(siglen, sig,
- rctx->tbuf, ctx->pkey->pkey.rsa,
+ ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, rsa,
RSA_X931_PADDING);
if (ret < 1)
return 0;
ret--;
- if (rctx->tbuf[ret] != RSA_X931_hash_id(EVP_MD_type(rctx->md))) {
- RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER,
- RSA_R_ALGORITHM_MISMATCH);
+ if (rctx->tbuf[ret] != RSA_X931_hash_id(EVP_MD_get_type(rctx->md))) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_ALGORITHM_MISMATCH);
return 0;
}
- if (ret != EVP_MD_size(rctx->md)) {
- RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER,
- RSA_R_INVALID_DIGEST_LENGTH);
+ if (ret != EVP_MD_get_size(rctx->md)) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
return 0;
}
if (rout)
memcpy(rout, rctx->tbuf, ret);
} else if (rctx->pad_mode == RSA_PKCS1_PADDING) {
size_t sltmp;
- ret = int_rsa_verify(EVP_MD_type(rctx->md),
- NULL, 0, rout, &sltmp,
- sig, siglen, ctx->pkey->pkey.rsa);
+ ret = ossl_rsa_verify(EVP_MD_get_type(rctx->md),
+ NULL, 0, rout, &sltmp,
+ sig, siglen, rsa);
if (ret <= 0)
return 0;
ret = sltmp;
- } else
+ } else {
return -1;
- } else
- ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa,
- rctx->pad_mode);
+ }
+ } else {
+ ret = RSA_public_decrypt(siglen, sig, rout, rsa, rctx->pad_mode);
+ }
if (ret < 0)
return ret;
*routlen = ret;
const unsigned char *tbs, size_t tbslen)
{
RSA_PKEY_CTX *rctx = ctx->data;
- RSA *rsa = ctx->pkey->pkey.rsa;
+ /*
+ * Discard const. Its marked as const because this may be a cached copy of
+ * the "real" key. These calls don't make any modifications that need to
+ * be reflected back in the "original" key.
+ */
+ RSA *rsa = (RSA *)EVP_PKEY_get0_RSA(ctx->pkey);
size_t rslen;
+ int md_size;
+
if (rctx->md) {
if (rctx->pad_mode == RSA_PKCS1_PADDING)
- return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen,
+ return RSA_verify(EVP_MD_get_type(rctx->md), tbs, tbslen,
sig, siglen, rsa);
- if (tbslen != (size_t)EVP_MD_size(rctx->md)) {
- RSAerr(RSA_F_PKEY_RSA_VERIFY, RSA_R_INVALID_DIGEST_LENGTH);
+ md_size = EVP_MD_get_size(rctx->md);
+ if (md_size <= 0) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
+ return -1;
+ }
+ if (tbslen != (size_t)md_size) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
return -1;
}
if (rctx->pad_mode == RSA_X931_PADDING) {
if (ret <= 0)
return 0;
return 1;
- } else
+ } else {
return -1;
+ }
} else {
if (!setup_tbuf(rctx, ctx))
return -1;
{
int ret;
RSA_PKEY_CTX *rctx = ctx->data;
+ /*
+ * Discard const. Its marked as const because this may be a cached copy of
+ * the "real" key. These calls don't make any modifications that need to
+ * be reflected back in the "original" key.
+ */
+ RSA *rsa = (RSA *)EVP_PKEY_get0_RSA(ctx->pkey);
+
if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) {
- int klen = RSA_size(ctx->pkey->pkey.rsa);
+ int klen = RSA_size(rsa);
if (!setup_tbuf(rctx, ctx))
return -1;
if (!RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, klen,
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);
+ ret = RSA_public_encrypt(klen, rctx->tbuf, out, rsa, RSA_NO_PADDING);
+ } else {
+ ret = RSA_public_encrypt(inlen, in, out, rsa, rctx->pad_mode);
+ }
if (ret < 0)
return ret;
*outlen = ret;
const unsigned char *in, size_t inlen)
{
int ret;
+ int pad_mode;
RSA_PKEY_CTX *rctx = ctx->data;
+ /*
+ * Discard const. Its marked as const because this may be a cached copy of
+ * the "real" key. These calls don't make any modifications that need to
+ * be reflected back in the "original" key.
+ */
+ RSA *rsa = (RSA *)EVP_PKEY_get0_RSA(ctx->pkey);
+
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);
+ ret = RSA_private_decrypt(inlen, in, rctx->tbuf, 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,
+ ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, ret, rctx->tbuf,
+ ret, 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;
- return 1;
+ } else {
+ if (rctx->pad_mode == RSA_PKCS1_PADDING &&
+ rctx->implicit_rejection == 0)
+ pad_mode = RSA_PKCS1_NO_IMPLICIT_REJECT_PADDING;
+ else
+ pad_mode = rctx->pad_mode;
+ ret = RSA_private_decrypt(inlen, in, out, rsa, pad_mode);
+ }
+ *outlen = constant_time_select_s(constant_time_msb_s(ret), *outlen, ret);
+ ret = constant_time_select_int(constant_time_msb(ret), ret, 1);
+ return ret;
}
static int check_padding_md(const EVP_MD *md, int padding)
{
int mdnid;
+
if (!md)
return 1;
- mdnid = EVP_MD_type(md);
+ mdnid = EVP_MD_get_type(md);
if (padding == RSA_NO_PADDING) {
- RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE);
return 0;
}
if (padding == RSA_X931_PADDING) {
if (RSA_X931_hash_id(mdnid) == -1) {
- RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_X931_DIGEST);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_X931_DIGEST);
return 0;
}
} else {
- switch(mdnid) {
+ switch (mdnid) {
/* List of all supported RSA digests */
case NID_sha1:
case NID_sha224:
case NID_sha256:
case NID_sha384:
case NID_sha512:
+ case NID_sha512_224:
+ case NID_sha512_256:
case NID_md5:
case NID_md5_sha1:
case NID_md2:
case NID_md4:
case NID_mdc2:
case NID_ripemd160:
+ case NID_sha3_224:
+ case NID_sha3_256:
+ case NID_sha3_384:
+ case NID_sha3_512:
return 1;
default:
- RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_DIGEST);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST);
return 0;
}
static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
RSA_PKEY_CTX *rctx = ctx->data;
+ int md_size;
+
switch (type) {
case EVP_PKEY_CTRL_RSA_PADDING:
if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) {
goto bad_pad;
if (!rctx->md)
rctx->md = EVP_sha1();
+ } else if (pkey_ctx_is_pss(ctx)) {
+ goto bad_pad;
}
if (p1 == RSA_PKCS1_OAEP_PADDING) {
if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT))
return 1;
}
bad_pad:
- RSAerr(RSA_F_PKEY_RSA_CTRL,
- RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
+ ERR_raise(ERR_LIB_RSA, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
return -2;
case EVP_PKEY_CTRL_GET_RSA_PADDING:
case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) {
- RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PSS_SALTLEN);
return -2;
}
- if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN)
+ if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) {
*(int *)p2 = rctx->saltlen;
- else {
- if (p1 < -2)
+ } else {
+ if (p1 < RSA_PSS_SALTLEN_MAX)
return -2;
+ if (rsa_pss_restricted(rctx)) {
+ if (p1 == RSA_PSS_SALTLEN_AUTO
+ && ctx->operation == EVP_PKEY_OP_VERIFY) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PSS_SALTLEN);
+ return -2;
+ }
+ md_size = EVP_MD_get_size(rctx->md);
+ if (md_size <= 0) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
+ return -2;
+ }
+ if ((p1 == RSA_PSS_SALTLEN_DIGEST
+ && rctx->min_saltlen > md_size)
+ || (p1 >= 0 && p1 < rctx->min_saltlen)) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_PSS_SALTLEN_TOO_SMALL);
+ return 0;
+ }
+ }
rctx->saltlen = p1;
}
return 1;
case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
- if (p1 < 512) {
- RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_KEY_SIZE_TOO_SMALL);
+ if (p1 < RSA_MIN_MODULUS_BITS) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_KEY_SIZE_TOO_SMALL);
return -2;
}
rctx->nbits = p1;
case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
if (p2 == NULL || !BN_is_odd((BIGNUM *)p2) || BN_is_one((BIGNUM *)p2)) {
- RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_BAD_E_VALUE);
+ ERR_raise(ERR_LIB_RSA, RSA_R_BAD_E_VALUE);
return -2;
}
BN_free(rctx->pub_exp);
rctx->pub_exp = p2;
return 1;
+ case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
+ if (p1 < RSA_DEFAULT_PRIME_NUM || p1 > RSA_MAX_PRIME_NUM) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_KEY_PRIME_NUM_INVALID);
+ return -2;
+ }
+ rctx->primes = p1;
+ 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);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE);
return -2;
}
if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD)
case EVP_PKEY_CTRL_MD:
if (!check_padding_md(p2, rctx->pad_mode))
return 0;
+ if (rsa_pss_restricted(rctx)) {
+ if (EVP_MD_get_type(rctx->md) == EVP_MD_get_type(p2))
+ return 1;
+ ERR_raise(ERR_LIB_RSA, RSA_R_DIGEST_NOT_ALLOWED);
+ return 0;
+ }
rctx->md = p2;
return 1;
case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
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);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_MGF1_MD);
return -2;
}
if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) {
*(const EVP_MD **)p2 = rctx->mgf1md;
else
*(const EVP_MD **)p2 = rctx->md;
- } else
+ } else {
+ if (rsa_pss_restricted(rctx)) {
+ if (EVP_MD_get_type(rctx->mgf1md) == EVP_MD_get_type(p2))
+ return 1;
+ ERR_raise(ERR_LIB_RSA, RSA_R_MGF1_DIGEST_NOT_ALLOWED);
+ return 0;
+ }
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);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE);
return -2;
}
OPENSSL_free(rctx->oaep_label);
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);
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE);
return -2;
}
+ if (p2 == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
*(unsigned char **)p2 = rctx->oaep_label;
return rctx->oaep_labellen;
+ case EVP_PKEY_CTRL_RSA_IMPLICIT_REJECTION:
+ if (rctx->pad_mode != RSA_PKCS1_PADDING) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PADDING_MODE);
+ return -2;
+ }
+ rctx->implicit_rejection = p1;
+ return 1;
+
case EVP_PKEY_CTRL_DIGESTINIT:
+ case EVP_PKEY_CTRL_PKCS7_SIGN:
+#ifndef OPENSSL_NO_CMS
+ case EVP_PKEY_CTRL_CMS_SIGN:
+#endif
+ return 1;
+
case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
case EVP_PKEY_CTRL_PKCS7_DECRYPT:
- case EVP_PKEY_CTRL_PKCS7_SIGN:
- return 1;
#ifndef OPENSSL_NO_CMS
case EVP_PKEY_CTRL_CMS_DECRYPT:
case EVP_PKEY_CTRL_CMS_ENCRYPT:
- case EVP_PKEY_CTRL_CMS_SIGN:
- return 1;
#endif
+ if (!pkey_ctx_is_pss(ctx))
+ return 1;
+ /* fall through */
case EVP_PKEY_CTRL_PEER_KEY:
- RSAerr(RSA_F_PKEY_RSA_CTRL,
- RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ERR_raise(ERR_LIB_RSA, RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
return -2;
default:
static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
- if (!value) {
- RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_VALUE_MISSING);
+ if (value == NULL) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_VALUE_MISSING);
return 0;
}
if (strcmp(type, "rsa_padding_mode") == 0) {
int pm;
- if (strcmp(value, "pkcs1") == 0)
+
+ if (strcmp(value, "pkcs1") == 0) {
pm = RSA_PKCS1_PADDING;
- else if (strcmp(value, "sslv23") == 0)
- pm = RSA_SSLV23_PADDING;
- else if (strcmp(value, "none") == 0)
+ } else if (strcmp(value, "none") == 0) {
pm = RSA_NO_PADDING;
- else if (strcmp(value, "oeap") == 0)
+ } else if (strcmp(value, "oeap") == 0) {
pm = RSA_PKCS1_OAEP_PADDING;
- else if (strcmp(value, "oaep") == 0)
+ } else if (strcmp(value, "oaep") == 0) {
pm = RSA_PKCS1_OAEP_PADDING;
- else if (strcmp(value, "x931") == 0)
+ } else if (strcmp(value, "x931") == 0) {
pm = RSA_X931_PADDING;
- else if (strcmp(value, "pss") == 0)
+ } else if (strcmp(value, "pss") == 0) {
pm = RSA_PKCS1_PSS_PADDING;
- else {
- RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_UNKNOWN_PADDING_TYPE);
+ } else {
+ ERR_raise(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE);
return -2;
}
return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
if (strcmp(type, "rsa_pss_saltlen") == 0) {
int saltlen;
- saltlen = atoi(value);
+
+ if (!strcmp(value, "digest"))
+ saltlen = RSA_PSS_SALTLEN_DIGEST;
+ else if (!strcmp(value, "max"))
+ saltlen = RSA_PSS_SALTLEN_MAX;
+ else if (!strcmp(value, "auto"))
+ saltlen = RSA_PSS_SALTLEN_AUTO;
+ else
+ saltlen = atoi(value);
return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, saltlen);
}
if (strcmp(type, "rsa_keygen_bits") == 0) {
- int nbits;
- nbits = atoi(value);
+ int nbits = atoi(value);
+
return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, nbits);
}
if (strcmp(type, "rsa_keygen_pubexp") == 0) {
int ret;
+
BIGNUM *pubexp = NULL;
if (!BN_asc2bn(&pubexp, value))
return 0;
- ret = EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp);
- if (ret <= 0)
- BN_free(pubexp);
+ ret = EVP_PKEY_CTX_set1_rsa_keygen_pubexp(ctx, pubexp);
+ BN_free(pubexp);
return ret;
}
+ if (strcmp(type, "rsa_keygen_primes") == 0) {
+ int nprimes = atoi(value);
+
+ return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, nprimes);
+ }
+
if (strcmp(type, "rsa_mgf1_md") == 0)
return EVP_PKEY_CTX_md(ctx,
EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
EVP_PKEY_CTRL_RSA_MGF1_MD, value);
- if (strcmp(type, "rsa_oaep_md") == 0) {
- const EVP_MD *md;
- if ((md = EVP_get_digestbyname(value)) == NULL) {
- RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_INVALID_DIGEST);
- return 0;
+ if (pkey_ctx_is_pss(ctx)) {
+
+ if (strcmp(type, "rsa_pss_keygen_mgf1_md") == 0)
+ return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_KEYGEN,
+ EVP_PKEY_CTRL_RSA_MGF1_MD, value);
+
+ if (strcmp(type, "rsa_pss_keygen_md") == 0)
+ return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_KEYGEN,
+ EVP_PKEY_CTRL_MD, value);
+
+ if (strcmp(type, "rsa_pss_keygen_saltlen") == 0) {
+ int saltlen = atoi(value);
+
+ return EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, saltlen);
}
}
unsigned char *lab;
long lablen;
int ret;
+
lab = OPENSSL_hexstr2buf(value, &lablen);
if (!lab)
return 0;
return -2;
}
+/* Set PSS parameters when generating a key, if necessary */
+static int rsa_set_pss_param(RSA *rsa, EVP_PKEY_CTX *ctx)
+{
+ RSA_PKEY_CTX *rctx = ctx->data;
+
+ if (!pkey_ctx_is_pss(ctx))
+ return 1;
+ /* If all parameters are default values don't set pss */
+ if (rctx->md == NULL && rctx->mgf1md == NULL && rctx->saltlen == -2)
+ return 1;
+ rsa->pss = ossl_rsa_pss_params_create(rctx->md, rctx->mgf1md,
+ rctx->saltlen == -2
+ ? 0 : rctx->saltlen);
+ if (rsa->pss == NULL)
+ return 0;
+ return 1;
+}
+
static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
RSA *rsa = NULL;
RSA_PKEY_CTX *rctx = ctx->data;
BN_GENCB *pcb;
int ret;
+
if (rctx->pub_exp == NULL) {
rctx->pub_exp = BN_new();
if (rctx->pub_exp == NULL || !BN_set_word(rctx->pub_exp, RSA_F4))
return 0;
}
evp_pkey_set_cb_translate(pcb, ctx);
- } else
+ } else {
pcb = NULL;
- ret = RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, pcb);
+ }
+ ret = RSA_generate_multi_prime_key(rsa, rctx->nbits, rctx->primes,
+ rctx->pub_exp, pcb);
BN_GENCB_free(pcb);
+ if (ret > 0 && !rsa_set_pss_param(rsa, ctx)) {
+ RSA_free(rsa);
+ return 0;
+ }
if (ret > 0)
EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, rsa);
else
return ret;
}
-const EVP_PKEY_METHOD rsa_pkey_meth = {
+static const EVP_PKEY_METHOD rsa_pkey_meth = {
EVP_PKEY_RSA,
EVP_PKEY_FLAG_AUTOARGLEN,
pkey_rsa_init,
pkey_rsa_ctrl_str
};
-const EVP_PKEY_METHOD rsa_pss_pkey_meth = {
+const EVP_PKEY_METHOD *ossl_rsa_pkey_method(void)
+{
+ return &rsa_pkey_meth;
+}
+
+/*
+ * Called for PSS sign or verify initialisation: checks PSS parameter
+ * sanity and sets any restrictions on key usage.
+ */
+
+static int pkey_pss_init(EVP_PKEY_CTX *ctx)
+{
+ const RSA *rsa;
+ RSA_PKEY_CTX *rctx = ctx->data;
+ const EVP_MD *md;
+ const EVP_MD *mgf1md;
+ int min_saltlen, max_saltlen, md_size;
+
+ /* Should never happen */
+ if (!pkey_ctx_is_pss(ctx))
+ return 0;
+ rsa = EVP_PKEY_get0_RSA(ctx->pkey);
+ /* If no restrictions just return */
+ if (rsa->pss == NULL)
+ return 1;
+ /* Get and check parameters */
+ if (!ossl_rsa_pss_get_param(rsa->pss, &md, &mgf1md, &min_saltlen))
+ return 0;
+
+ /* See if minimum salt length exceeds maximum possible */
+ md_size = EVP_MD_get_size(md);
+ if (md_size <= 0) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_DIGEST_LENGTH);
+ return 0;
+ }
+ max_saltlen = RSA_size(rsa) - md_size;
+ if ((RSA_bits(rsa) & 0x7) == 1)
+ max_saltlen--;
+ if (min_saltlen > max_saltlen) {
+ ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_SALT_LENGTH);
+ return 0;
+ }
+
+ rctx->min_saltlen = min_saltlen;
+
+ /*
+ * Set PSS restrictions as defaults: we can then block any attempt to
+ * use invalid values in pkey_rsa_ctrl
+ */
+
+ rctx->md = md;
+ rctx->mgf1md = mgf1md;
+ rctx->saltlen = min_saltlen;
+
+ return 1;
+}
+
+static const EVP_PKEY_METHOD rsa_pss_pkey_meth = {
EVP_PKEY_RSA_PSS,
EVP_PKEY_FLAG_AUTOARGLEN,
pkey_rsa_init,
0,
pkey_rsa_keygen,
- 0,
+ pkey_pss_init,
pkey_rsa_sign,
- 0,
+ pkey_pss_init,
pkey_rsa_verify,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
pkey_rsa_ctrl,
pkey_rsa_ctrl_str
};
+
+const EVP_PKEY_METHOD *ossl_rsa_pss_pkey_method(void)
+{
+ return &rsa_pss_pkey_meth;
+}