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Diffstat (limited to 'fips/rsa/fips_rsa_sign.c')
-rw-r--r--fips/rsa/fips_rsa_sign.c554
1 files changed, 554 insertions, 0 deletions
diff --git a/fips/rsa/fips_rsa_sign.c b/fips/rsa/fips_rsa_sign.c
new file mode 100644
index 000000000000..37364621d1ac
--- /dev/null
+++ b/fips/rsa/fips_rsa_sign.c
@@ -0,0 +1,554 @@
+/* fips_rsa_sign.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2007.
+ */
+/* ====================================================================
+ * Copyright (c) 2007 The OpenSSL Project. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <string.h>
+#include <openssl/evp.h>
+#include <openssl/rsa.h>
+#include <openssl/err.h>
+#include <openssl/sha.h>
+
+#ifdef OPENSSL_FIPS
+
+/* FIPS versions of RSA_sign() and RSA_verify().
+ * These will only have to deal with SHA* signatures and by including
+ * pregenerated encodings all ASN1 dependencies can be avoided
+ */
+
+/* Standard encodings including NULL parameter */
+
+static const unsigned char sha1_bin[] = {
+ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05,
+ 0x00, 0x04, 0x14
+};
+
+static const unsigned char sha224_bin[] = {
+ 0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c
+};
+
+static const unsigned char sha256_bin[] = {
+ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20
+};
+
+static const unsigned char sha384_bin[] = {
+ 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30
+};
+
+static const unsigned char sha512_bin[] = {
+ 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40
+};
+
+/* Alternate encodings with absent parameters. We don't generate signature
+ * using this format but do tolerate received signatures of this form.
+ */
+
+static unsigned char sha1_nn_bin[] = {
+ 0x30, 0x1f, 0x30, 0x07, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x04,
+ 0x14
+};
+
+static unsigned char sha224_nn_bin[] = {
+ 0x30, 0x2b, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x04, 0x04, 0x1c
+};
+
+static unsigned char sha256_nn_bin[] = {
+ 0x30, 0x2f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x01, 0x04, 0x20
+};
+
+static unsigned char sha384_nn_bin[] = {
+ 0x30, 0x3f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x02, 0x04, 0x30
+};
+
+static unsigned char sha512_nn_bin[] = {
+ 0x30, 0x4f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+ 0x04, 0x02, 0x03, 0x04, 0x40
+};
+
+
+static const unsigned char *fips_digestinfo_encoding(int nid, unsigned int *len)
+ {
+ switch (nid)
+ {
+
+ case NID_sha1:
+ *len = sizeof(sha1_bin);
+ return sha1_bin;
+
+ case NID_sha224:
+ *len = sizeof(sha224_bin);
+ return sha224_bin;
+
+ case NID_sha256:
+ *len = sizeof(sha256_bin);
+ return sha256_bin;
+
+ case NID_sha384:
+ *len = sizeof(sha384_bin);
+ return sha384_bin;
+
+ case NID_sha512:
+ *len = sizeof(sha512_bin);
+ return sha512_bin;
+
+ default:
+ return NULL;
+
+ }
+ }
+
+static const unsigned char *fips_digestinfo_nn_encoding(int nid, unsigned int *len)
+ {
+ switch (nid)
+ {
+
+ case NID_sha1:
+ *len = sizeof(sha1_nn_bin);
+ return sha1_nn_bin;
+
+ case NID_sha224:
+ *len = sizeof(sha224_nn_bin);
+ return sha224_nn_bin;
+
+ case NID_sha256:
+ *len = sizeof(sha256_nn_bin);
+ return sha256_nn_bin;
+
+ case NID_sha384:
+ *len = sizeof(sha384_nn_bin);
+ return sha384_nn_bin;
+
+ case NID_sha512:
+ *len = sizeof(sha512_nn_bin);
+ return sha512_nn_bin;
+
+ default:
+ return NULL;
+
+ }
+ }
+
+static int fips_rsa_sign(int type, const unsigned char *x, unsigned int y,
+ unsigned char *sigret, unsigned int *siglen, EVP_MD_SVCTX *sv)
+ {
+ int i=0,j,ret=0;
+ unsigned int dlen;
+ const unsigned char *der;
+ unsigned int m_len;
+ int pad_mode = sv->mctx->flags & EVP_MD_CTX_FLAG_PAD_MASK;
+ int rsa_pad_mode = 0;
+ RSA *rsa = sv->key;
+ /* Largest DigestInfo: 19 (max encoding) + max MD */
+ unsigned char tmpdinfo[19 + EVP_MAX_MD_SIZE];
+ unsigned char md[EVP_MAX_MD_SIZE + 1];
+
+ EVP_DigestFinal_ex(sv->mctx, md, &m_len);
+
+ if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_sign)
+ {
+ ret = rsa->meth->rsa_sign(type, md, m_len,
+ sigret, siglen, rsa);
+ goto done;
+ }
+
+ if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
+ {
+ int hash_id;
+ memcpy(tmpdinfo, md, m_len);
+ hash_id = RSA_X931_hash_id(M_EVP_MD_CTX_type(sv->mctx));
+ if (hash_id == -1)
+ {
+ RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
+ return 0;
+ }
+ tmpdinfo[m_len] = (unsigned char)hash_id;
+ i = m_len + 1;
+ rsa_pad_mode = RSA_X931_PADDING;
+ }
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
+ {
+
+ der = fips_digestinfo_encoding(type, &dlen);
+
+ if (!der)
+ {
+ RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
+ return 0;
+ }
+ memcpy(tmpdinfo, der, dlen);
+ memcpy(tmpdinfo + dlen, md, m_len);
+
+ i = dlen + m_len;
+ rsa_pad_mode = RSA_PKCS1_PADDING;
+
+ }
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
+ {
+ unsigned char *sbuf;
+ int saltlen;
+ i = RSA_size(rsa);
+ sbuf = OPENSSL_malloc(RSA_size(rsa));
+ saltlen = M_EVP_MD_CTX_FLAG_PSS_SALT(sv->mctx);
+ if (saltlen == EVP_MD_CTX_FLAG_PSS_MDLEN)
+ saltlen = -1;
+ else if (saltlen == EVP_MD_CTX_FLAG_PSS_MREC)
+ saltlen = -2;
+ if (!sbuf)
+ {
+ RSAerr(RSA_F_FIPS_RSA_SIGN,ERR_R_MALLOC_FAILURE);
+ goto psserr;
+ }
+ if (!RSA_padding_add_PKCS1_PSS(rsa, sbuf, md,
+ M_EVP_MD_CTX_md(sv->mctx), saltlen))
+ goto psserr;
+ j=rsa->meth->rsa_priv_enc(i,sbuf,sigret,rsa,RSA_NO_PADDING);
+ if (j > 0)
+ {
+ ret=1;
+ *siglen=j;
+ }
+ psserr:
+ OPENSSL_cleanse(md,m_len);
+ OPENSSL_cleanse(sbuf, i);
+ OPENSSL_free(sbuf);
+ return ret;
+ }
+
+ j=RSA_size(rsa);
+ if (i > (j-RSA_PKCS1_PADDING_SIZE))
+ {
+ RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
+ goto done;
+ }
+ /* NB: call underlying method directly to avoid FIPS blocking */
+ j=rsa->meth->rsa_priv_enc(i,tmpdinfo,sigret,rsa,rsa_pad_mode);
+ if (j > 0)
+ {
+ ret=1;
+ *siglen=j;
+ }
+
+ done:
+ OPENSSL_cleanse(tmpdinfo,i);
+ OPENSSL_cleanse(md,m_len);
+ return ret;
+ }
+
+static int fips_rsa_verify(int dtype,
+ const unsigned char *x, unsigned int y,
+ unsigned char *sigbuf, unsigned int siglen, EVP_MD_SVCTX *sv)
+ {
+ int i,ret=0;
+ unsigned int dlen, diglen;
+ int pad_mode = sv->mctx->flags & EVP_MD_CTX_FLAG_PAD_MASK;
+ int rsa_pad_mode = 0;
+ unsigned char *s;
+ const unsigned char *der;
+ unsigned char dig[EVP_MAX_MD_SIZE];
+ RSA *rsa = sv->key;
+
+ if (siglen != (unsigned int)RSA_size(sv->key))
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
+ return(0);
+ }
+
+ EVP_DigestFinal_ex(sv->mctx, dig, &diglen);
+
+ if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify)
+ {
+ return rsa->meth->rsa_verify(dtype, dig, diglen,
+ sigbuf, siglen, rsa);
+ }
+
+
+ s= OPENSSL_malloc((unsigned int)siglen);
+ if (s == NULL)
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
+ rsa_pad_mode = RSA_X931_PADDING;
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
+ rsa_pad_mode = RSA_PKCS1_PADDING;
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
+ rsa_pad_mode = RSA_NO_PADDING;
+
+ /* NB: call underlying method directly to avoid FIPS blocking */
+ i=rsa->meth->rsa_pub_dec((int)siglen,sigbuf,s, rsa, rsa_pad_mode);
+
+ if (i <= 0) goto err;
+
+ if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
+ {
+ int hash_id;
+ if (i != (int)(diglen + 1))
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+ hash_id = RSA_X931_hash_id(M_EVP_MD_CTX_type(sv->mctx));
+ if (hash_id == -1)
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_UNKNOWN_ALGORITHM_TYPE);
+ goto err;
+ }
+ if (s[diglen] != (unsigned char)hash_id)
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+ if (memcmp(s, dig, diglen))
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+ ret = 1;
+ }
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
+ {
+
+ der = fips_digestinfo_encoding(dtype, &dlen);
+
+ if (!der)
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_UNKNOWN_ALGORITHM_TYPE);
+ return(0);
+ }
+
+ /* Compare, DigestInfo length, DigestInfo header and finally
+ * digest value itself
+ */
+
+ /* If length mismatch try alternate encoding */
+ if (i != (int)(dlen + diglen))
+ der = fips_digestinfo_nn_encoding(dtype, &dlen);
+
+ if ((i != (int)(dlen + diglen)) || memcmp(der, s, dlen)
+ || memcmp(s + dlen, dig, diglen))
+ {
+ RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+ goto err;
+ }
+ ret = 1;
+
+ }
+ else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
+ {
+ int saltlen;
+ saltlen = M_EVP_MD_CTX_FLAG_PSS_SALT(sv->mctx);
+ if (saltlen == EVP_MD_CTX_FLAG_PSS_MDLEN)
+ saltlen = -1;
+ else if (saltlen == EVP_MD_CTX_FLAG_PSS_MREC)
+ saltlen = -2;
+ ret = RSA_verify_PKCS1_PSS(rsa, dig, M_EVP_MD_CTX_md(sv->mctx),
+ s, saltlen);
+ if (ret < 0)
+ ret = 0;
+ }
+err:
+ if (s != NULL)
+ {
+ OPENSSL_cleanse(s, siglen);
+ OPENSSL_free(s);
+ }
+ return(ret);
+ }
+
+#define EVP_PKEY_RSA_fips_method \
+ (evp_sign_method *)fips_rsa_sign, \
+ (evp_verify_method *)fips_rsa_verify, \
+ {EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
+
+static int init(EVP_MD_CTX *ctx)
+ { return SHA1_Init(ctx->md_data); }
+
+static int update(EVP_MD_CTX *ctx,const void *data,size_t count)
+ { return SHA1_Update(ctx->md_data,data,count); }
+
+static int final(EVP_MD_CTX *ctx,unsigned char *md)
+ { return SHA1_Final(md,ctx->md_data); }
+
+static const EVP_MD sha1_md=
+ {
+ NID_sha1,
+ NID_sha1WithRSAEncryption,
+ SHA_DIGEST_LENGTH,
+ EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
+ init,
+ update,
+ final,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_fips_method,
+ SHA_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA_CTX),
+ };
+
+const EVP_MD *EVP_sha1(void)
+ {
+ return(&sha1_md);
+ }
+
+static int init224(EVP_MD_CTX *ctx)
+ { return SHA224_Init(ctx->md_data); }
+static int init256(EVP_MD_CTX *ctx)
+ { return SHA256_Init(ctx->md_data); }
+/*
+ * Even though there're separate SHA224_[Update|Final], we call
+ * SHA256 functions even in SHA224 context. This is what happens
+ * there anyway, so we can spare few CPU cycles:-)
+ */
+static int update256(EVP_MD_CTX *ctx,const void *data,size_t count)
+ { return SHA256_Update(ctx->md_data,data,count); }
+static int final256(EVP_MD_CTX *ctx,unsigned char *md)
+ { return SHA256_Final(md,ctx->md_data); }
+
+static const EVP_MD sha224_md=
+ {
+ NID_sha224,
+ NID_sha224WithRSAEncryption,
+ SHA224_DIGEST_LENGTH,
+ EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
+ init224,
+ update256,
+ final256,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_fips_method,
+ SHA256_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA256_CTX),
+ };
+
+const EVP_MD *EVP_sha224(void)
+ { return(&sha224_md); }
+
+static const EVP_MD sha256_md=
+ {
+ NID_sha256,
+ NID_sha256WithRSAEncryption,
+ SHA256_DIGEST_LENGTH,
+ EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
+ init256,
+ update256,
+ final256,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_fips_method,
+ SHA256_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA256_CTX),
+ };
+
+const EVP_MD *EVP_sha256(void)
+ { return(&sha256_md); }
+
+static int init384(EVP_MD_CTX *ctx)
+ { return SHA384_Init(ctx->md_data); }
+static int init512(EVP_MD_CTX *ctx)
+ { return SHA512_Init(ctx->md_data); }
+/* See comment in SHA224/256 section */
+static int update512(EVP_MD_CTX *ctx,const void *data,size_t count)
+ { return SHA512_Update(ctx->md_data,data,count); }
+static int final512(EVP_MD_CTX *ctx,unsigned char *md)
+ { return SHA512_Final(md,ctx->md_data); }
+
+static const EVP_MD sha384_md=
+ {
+ NID_sha384,
+ NID_sha384WithRSAEncryption,
+ SHA384_DIGEST_LENGTH,
+ EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
+ init384,
+ update512,
+ final512,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_fips_method,
+ SHA512_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA512_CTX),
+ };
+
+const EVP_MD *EVP_sha384(void)
+ { return(&sha384_md); }
+
+static const EVP_MD sha512_md=
+ {
+ NID_sha512,
+ NID_sha512WithRSAEncryption,
+ SHA512_DIGEST_LENGTH,
+ EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
+ init512,
+ update512,
+ final512,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_fips_method,
+ SHA512_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA512_CTX),
+ };
+
+const EVP_MD *EVP_sha512(void)
+ { return(&sha512_md); }
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 19:30:31 +0000