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-rw-r--r--crypto/dsa/dsa.h3
-rw-r--r--crypto/dsa/dsa_ameth.c6
-rw-r--r--crypto/dsa/dsa_err.c5
-rw-r--r--crypto/dsa/dsa_gen.c369
-rw-r--r--crypto/dsa/dsa_locl.h8
-rw-r--r--crypto/dsa/dsa_ossl.c6
-rw-r--r--crypto/dsa/dsa_pmeth.c4
7 files changed, 394 insertions, 7 deletions
diff --git a/crypto/dsa/dsa.h b/crypto/dsa/dsa.h
index a2f0ee786370e..545358fd02b2a 100644
--- a/crypto/dsa/dsa.h
+++ b/crypto/dsa/dsa.h
@@ -287,6 +287,7 @@ void ERR_load_DSA_strings(void);
# define DSA_F_DO_DSA_PRINT 104
# define DSA_F_DSAPARAMS_PRINT 100
# define DSA_F_DSAPARAMS_PRINT_FP 101
+# define DSA_F_DSA_BUILTIN_PARAMGEN2 126
# define DSA_F_DSA_DO_SIGN 112
# define DSA_F_DSA_DO_VERIFY 113
# define DSA_F_DSA_GENERATE_KEY 124
@@ -316,12 +317,14 @@ void ERR_load_DSA_strings(void);
# define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100
# define DSA_R_DECODE_ERROR 104
# define DSA_R_INVALID_DIGEST_TYPE 106
+# define DSA_R_INVALID_PARAMETERS 112
# define DSA_R_MISSING_PARAMETERS 101
# define DSA_R_MODULUS_TOO_LARGE 103
# define DSA_R_NEED_NEW_SETUP_VALUES 110
# define DSA_R_NON_FIPS_DSA_METHOD 111
# define DSA_R_NO_PARAMETERS_SET 107
# define DSA_R_PARAMETER_ENCODING_ERROR 105
+# define DSA_R_Q_NOT_PRIME 113
#ifdef __cplusplus
}
diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c
index a2840eaed0950..2a5cd71371a76 100644
--- a/crypto/dsa/dsa_ameth.c
+++ b/crypto/dsa/dsa_ameth.c
@@ -601,10 +601,14 @@ static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
}
return 1;
+
+ case ASN1_PKEY_CTRL_CMS_RI_TYPE:
+ *(int *)arg2 = CMS_RECIPINFO_NONE;
+ return 1;
#endif
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
- *(int *)arg2 = NID_sha1;
+ *(int *)arg2 = NID_sha256;
return 2;
default:
diff --git a/crypto/dsa/dsa_err.c b/crypto/dsa/dsa_err.c
index 746f5dfe6dc78..f5ddc66b8a73f 100644
--- a/crypto/dsa/dsa_err.c
+++ b/crypto/dsa/dsa_err.c
@@ -1,6 +1,6 @@
/* crypto/dsa/dsa_err.c */
/* ====================================================================
- * Copyright (c) 1999-2011 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1999-2013 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
@@ -74,6 +74,7 @@ static ERR_STRING_DATA DSA_str_functs[] = {
{ERR_FUNC(DSA_F_DO_DSA_PRINT), "DO_DSA_PRINT"},
{ERR_FUNC(DSA_F_DSAPARAMS_PRINT), "DSAparams_print"},
{ERR_FUNC(DSA_F_DSAPARAMS_PRINT_FP), "DSAparams_print_fp"},
+ {ERR_FUNC(DSA_F_DSA_BUILTIN_PARAMGEN2), "DSA_BUILTIN_PARAMGEN2"},
{ERR_FUNC(DSA_F_DSA_DO_SIGN), "DSA_do_sign"},
{ERR_FUNC(DSA_F_DSA_DO_VERIFY), "DSA_do_verify"},
{ERR_FUNC(DSA_F_DSA_GENERATE_KEY), "DSA_generate_key"},
@@ -107,12 +108,14 @@ static ERR_STRING_DATA DSA_str_reasons[] = {
"data too large for key size"},
{ERR_REASON(DSA_R_DECODE_ERROR), "decode error"},
{ERR_REASON(DSA_R_INVALID_DIGEST_TYPE), "invalid digest type"},
+ {ERR_REASON(DSA_R_INVALID_PARAMETERS), "invalid parameters"},
{ERR_REASON(DSA_R_MISSING_PARAMETERS), "missing parameters"},
{ERR_REASON(DSA_R_MODULUS_TOO_LARGE), "modulus too large"},
{ERR_REASON(DSA_R_NEED_NEW_SETUP_VALUES), "need new setup values"},
{ERR_REASON(DSA_R_NON_FIPS_DSA_METHOD), "non fips dsa method"},
{ERR_REASON(DSA_R_NO_PARAMETERS_SET), "no parameters set"},
{ERR_REASON(DSA_R_PARAMETER_ENCODING_ERROR), "parameter encoding error"},
+ {ERR_REASON(DSA_R_Q_NOT_PRIME), "q not prime"},
{0, NULL}
};
diff --git a/crypto/dsa/dsa_gen.c b/crypto/dsa/dsa_gen.c
index d686ab0af7705..5a328aaab5b40 100644
--- a/crypto/dsa/dsa_gen.c
+++ b/crypto/dsa/dsa_gen.c
@@ -86,6 +86,8 @@
# include "dsa_locl.h"
# ifdef OPENSSL_FIPS
+/* Workaround bug in prototype */
+# define fips_dsa_builtin_paramgen2 fips_dsa_paramgen_bad
# include <openssl/fips.h>
# endif
@@ -383,4 +385,371 @@ int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
BN_MONT_CTX_free(mont);
return ok;
}
+
+# ifdef OPENSSL_FIPS
+# undef fips_dsa_builtin_paramgen2
+extern int fips_dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
+ const EVP_MD *evpmd,
+ const unsigned char *seed_in,
+ size_t seed_len, int idx,
+ unsigned char *seed_out,
+ int *counter_ret, unsigned long *h_ret,
+ BN_GENCB *cb);
+# endif
+
+/*
+ * This is a parameter generation algorithm for the DSA2 algorithm as
+ * described in FIPS 186-3.
+ */
+
+int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
+ const EVP_MD *evpmd, const unsigned char *seed_in,
+ size_t seed_len, int idx, unsigned char *seed_out,
+ int *counter_ret, unsigned long *h_ret,
+ BN_GENCB *cb)
+{
+ int ok = -1;
+ unsigned char *seed = NULL, *seed_tmp = NULL;
+ unsigned char md[EVP_MAX_MD_SIZE];
+ int mdsize;
+ BIGNUM *r0, *W, *X, *c, *test;
+ BIGNUM *g = NULL, *q = NULL, *p = NULL;
+ BN_MONT_CTX *mont = NULL;
+ int i, k, n = 0, m = 0, qsize = N >> 3;
+ int counter = 0;
+ int r = 0;
+ BN_CTX *ctx = NULL;
+ EVP_MD_CTX mctx;
+ unsigned int h = 2;
+
+# ifdef OPENSSL_FIPS
+
+ if (FIPS_mode())
+ return fips_dsa_builtin_paramgen2(ret, L, N, evpmd,
+ seed_in, seed_len, idx,
+ seed_out, counter_ret, h_ret, cb);
+# endif
+
+ EVP_MD_CTX_init(&mctx);
+
+ if (evpmd == NULL) {
+ if (N == 160)
+ evpmd = EVP_sha1();
+ else if (N == 224)
+ evpmd = EVP_sha224();
+ else
+ evpmd = EVP_sha256();
+ }
+
+ mdsize = EVP_MD_size(evpmd);
+ /* If unverificable g generation only don't need seed */
+ if (!ret->p || !ret->q || idx >= 0) {
+ if (seed_len == 0)
+ seed_len = mdsize;
+
+ seed = OPENSSL_malloc(seed_len);
+
+ if (seed_out)
+ seed_tmp = seed_out;
+ else
+ seed_tmp = OPENSSL_malloc(seed_len);
+
+ if (!seed || !seed_tmp)
+ goto err;
+
+ if (seed_in)
+ memcpy(seed, seed_in, seed_len);
+
+ }
+
+ if ((ctx = BN_CTX_new()) == NULL)
+ goto err;
+
+ if ((mont = BN_MONT_CTX_new()) == NULL)
+ goto err;
+
+ BN_CTX_start(ctx);
+ r0 = BN_CTX_get(ctx);
+ g = BN_CTX_get(ctx);
+ W = BN_CTX_get(ctx);
+ X = BN_CTX_get(ctx);
+ c = BN_CTX_get(ctx);
+ test = BN_CTX_get(ctx);
+
+ /* if p, q already supplied generate g only */
+ if (ret->p && ret->q) {
+ p = ret->p;
+ q = ret->q;
+ if (idx >= 0)
+ memcpy(seed_tmp, seed, seed_len);
+ goto g_only;
+ } else {
+ p = BN_CTX_get(ctx);
+ q = BN_CTX_get(ctx);
+ }
+
+ if (!BN_lshift(test, BN_value_one(), L - 1))
+ goto err;
+ for (;;) {
+ for (;;) { /* find q */
+ unsigned char *pmd;
+ /* step 1 */
+ if (!BN_GENCB_call(cb, 0, m++))
+ goto err;
+
+ if (!seed_in) {
+ if (RAND_pseudo_bytes(seed, seed_len) < 0)
+ goto err;
+ }
+ /* step 2 */
+ if (!EVP_Digest(seed, seed_len, md, NULL, evpmd, NULL))
+ goto err;
+ /* Take least significant bits of md */
+ if (mdsize > qsize)
+ pmd = md + mdsize - qsize;
+ else
+ pmd = md;
+
+ if (mdsize < qsize)
+ memset(md + mdsize, 0, qsize - mdsize);
+
+ /* step 3 */
+ pmd[0] |= 0x80;
+ pmd[qsize - 1] |= 0x01;
+ if (!BN_bin2bn(pmd, qsize, q))
+ goto err;
+
+ /* step 4 */
+ r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx,
+ seed_in ? 1 : 0, cb);
+ if (r > 0)
+ break;
+ if (r != 0)
+ goto err;
+ /* Provided seed didn't produce a prime: error */
+ if (seed_in) {
+ ok = 0;
+ DSAerr(DSA_F_DSA_BUILTIN_PARAMGEN2, DSA_R_Q_NOT_PRIME);
+ goto err;
+ }
+
+ /* do a callback call */
+ /* step 5 */
+ }
+ /* Copy seed to seed_out before we mess with it */
+ if (seed_out)
+ memcpy(seed_out, seed, seed_len);
+
+ if (!BN_GENCB_call(cb, 2, 0))
+ goto err;
+ if (!BN_GENCB_call(cb, 3, 0))
+ goto err;
+
+ /* step 6 */
+ counter = 0;
+ /* "offset = 1" */
+
+ n = (L - 1) / (mdsize << 3);
+
+ for (;;) {
+ if ((counter != 0) && !BN_GENCB_call(cb, 0, counter))
+ goto err;
+
+ /* step 7 */
+ BN_zero(W);
+ /* now 'buf' contains "SEED + offset - 1" */
+ for (k = 0; k <= n; k++) {
+ /*
+ * obtain "SEED + offset + k" by incrementing:
+ */
+ for (i = seed_len - 1; i >= 0; i--) {
+ seed[i]++;
+ if (seed[i] != 0)
+ break;
+ }
+
+ if (!EVP_Digest(seed, seed_len, md, NULL, evpmd, NULL))
+ goto err;
+
+ /* step 8 */
+ if (!BN_bin2bn(md, mdsize, r0))
+ goto err;
+ if (!BN_lshift(r0, r0, (mdsize << 3) * k))
+ goto err;
+ if (!BN_add(W, W, r0))
+ goto err;
+ }
+
+ /* more of step 8 */
+ if (!BN_mask_bits(W, L - 1))
+ goto err;
+ if (!BN_copy(X, W))
+ goto err;
+ if (!BN_add(X, X, test))
+ goto err;
+
+ /* step 9 */
+ if (!BN_lshift1(r0, q))
+ goto err;
+ if (!BN_mod(c, X, r0, ctx))
+ goto err;
+ if (!BN_sub(r0, c, BN_value_one()))
+ goto err;
+ if (!BN_sub(p, X, r0))
+ goto err;
+
+ /* step 10 */
+ if (BN_cmp(p, test) >= 0) {
+ /* step 11 */
+ r = BN_is_prime_fasttest_ex(p, DSS_prime_checks, ctx, 1, cb);
+ if (r > 0)
+ goto end; /* found it */
+ if (r != 0)
+ goto err;
+ }
+
+ /* step 13 */
+ counter++;
+ /* "offset = offset + n + 1" */
+
+ /* step 14 */
+ if (counter >= (int)(4 * L))
+ break;
+ }
+ if (seed_in) {
+ ok = 0;
+ DSAerr(DSA_F_DSA_BUILTIN_PARAMGEN2, DSA_R_INVALID_PARAMETERS);
+ goto err;
+ }
+ }
+ end:
+ if (!BN_GENCB_call(cb, 2, 1))
+ goto err;
+
+ g_only:
+
+ /* We now need to generate g */
+ /* Set r0=(p-1)/q */
+ if (!BN_sub(test, p, BN_value_one()))
+ goto err;
+ if (!BN_div(r0, NULL, test, q, ctx))
+ goto err;
+
+ if (idx < 0) {
+ if (!BN_set_word(test, h))
+ goto err;
+ } else
+ h = 1;
+ if (!BN_MONT_CTX_set(mont, p, ctx))
+ goto err;
+
+ for (;;) {
+ static const unsigned char ggen[4] = { 0x67, 0x67, 0x65, 0x6e };
+ if (idx >= 0) {
+ md[0] = idx & 0xff;
+ md[1] = (h >> 8) & 0xff;
+ md[2] = h & 0xff;
+ if (!EVP_DigestInit_ex(&mctx, evpmd, NULL))
+ goto err;
+ if (!EVP_DigestUpdate(&mctx, seed_tmp, seed_len))
+ goto err;
+ if (!EVP_DigestUpdate(&mctx, ggen, sizeof(ggen)))
+ goto err;
+ if (!EVP_DigestUpdate(&mctx, md, 3))
+ goto err;
+ if (!EVP_DigestFinal_ex(&mctx, md, NULL))
+ goto err;
+ if (!BN_bin2bn(md, mdsize, test))
+ goto err;
+ }
+ /* g=test^r0%p */
+ if (!BN_mod_exp_mont(g, test, r0, p, ctx, mont))
+ goto err;
+ if (!BN_is_one(g))
+ break;
+ if (idx < 0 && !BN_add(test, test, BN_value_one()))
+ goto err;
+ h++;
+ if (idx >= 0 && h > 0xffff)
+ goto err;
+ }
+
+ if (!BN_GENCB_call(cb, 3, 1))
+ goto err;
+
+ ok = 1;
+ err:
+ if (ok == 1) {
+ if (p != ret->p) {
+ if (ret->p)
+ BN_free(ret->p);
+ ret->p = BN_dup(p);
+ }
+ if (q != ret->q) {
+ if (ret->q)
+ BN_free(ret->q);
+ ret->q = BN_dup(q);
+ }
+ if (ret->g)
+ BN_free(ret->g);
+ ret->g = BN_dup(g);
+ if (ret->p == NULL || ret->q == NULL || ret->g == NULL) {
+ ok = -1;
+ goto err;
+ }
+ if (counter_ret != NULL)
+ *counter_ret = counter;
+ if (h_ret != NULL)
+ *h_ret = h;
+ }
+ if (seed)
+ OPENSSL_free(seed);
+ if (seed_out != seed_tmp)
+ OPENSSL_free(seed_tmp);
+ if (ctx) {
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ }
+ if (mont != NULL)
+ BN_MONT_CTX_free(mont);
+ EVP_MD_CTX_cleanup(&mctx);
+ return ok;
+}
+
+int dsa_paramgen_check_g(DSA *dsa)
+{
+ BN_CTX *ctx;
+ BIGNUM *tmp;
+ BN_MONT_CTX *mont = NULL;
+ int rv = -1;
+ ctx = BN_CTX_new();
+ if (!ctx)
+ return -1;
+ BN_CTX_start(ctx);
+ if (BN_cmp(dsa->g, BN_value_one()) <= 0)
+ return 0;
+ if (BN_cmp(dsa->g, dsa->p) >= 0)
+ return 0;
+ tmp = BN_CTX_get(ctx);
+ if (!tmp)
+ goto err;
+ if ((mont = BN_MONT_CTX_new()) == NULL)
+ goto err;
+ if (!BN_MONT_CTX_set(mont, dsa->p, ctx))
+ goto err;
+ /* Work out g^q mod p */
+ if (!BN_mod_exp_mont(tmp, dsa->g, dsa->q, dsa->p, ctx, mont))
+ goto err;
+ if (!BN_cmp(tmp, BN_value_one()))
+ rv = 1;
+ else
+ rv = 0;
+ err:
+ BN_CTX_end(ctx);
+ if (mont)
+ BN_MONT_CTX_free(mont);
+ BN_CTX_free(ctx);
+ return rv;
+
+}
#endif
diff --git a/crypto/dsa/dsa_locl.h b/crypto/dsa/dsa_locl.h
index f32ee964d0e33..9c23c3ef90e2d 100644
--- a/crypto/dsa/dsa_locl.h
+++ b/crypto/dsa/dsa_locl.h
@@ -59,3 +59,11 @@ int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
size_t seed_len, unsigned char *seed_out,
int *counter_ret, unsigned long *h_ret,
BN_GENCB *cb);
+
+int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
+ const EVP_MD *evpmd, const unsigned char *seed_in,
+ size_t seed_len, int idx, unsigned char *seed_out,
+ int *counter_ret, unsigned long *h_ret,
+ BN_GENCB *cb);
+
+int dsa_paramgen_check_g(DSA *dsa);
diff --git a/crypto/dsa/dsa_ossl.c b/crypto/dsa/dsa_ossl.c
index 6edb26d97397c..f0ec8faa84cc3 100644
--- a/crypto/dsa/dsa_ossl.c
+++ b/crypto/dsa/dsa_ossl.c
@@ -398,11 +398,7 @@ static int dsa_do_verify(const unsigned char *dgst, int dgst_len,
ret = (BN_ucmp(&u1, sig->r) == 0);
err:
- /*
- * XXX: surely this is wrong - if ret is 0, it just didn't verify; there
- * is no error in BN. Test should be ret == -1 (Ben)
- */
- if (ret != 1)
+ if (ret < 0)
DSAerr(DSA_F_DSA_DO_VERIFY, ERR_R_BN_LIB);
if (ctx != NULL)
BN_CTX_free(ctx);
diff --git a/crypto/dsa/dsa_pmeth.c b/crypto/dsa/dsa_pmeth.c
index 0d480f6a707ef..42b8bb0862511 100644
--- a/crypto/dsa/dsa_pmeth.c
+++ b/crypto/dsa/dsa_pmeth.c
@@ -197,6 +197,10 @@ static int pkey_dsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
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:
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-11 12:53:47 +0000