1 files changed, 155 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/dsa/dsa_asn1.c b/openssl-1.1.0h/crypto/dsa/dsa_asn1.c
new file mode 100644
index 0000000..551c107
--- /dev/null
+++ b/openssl-1.1.0h/crypto/dsa/dsa_asn1.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include "dsa_locl.h"
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/rand.h>
+
+ASN1_SEQUENCE(DSA_SIG) = {
+        ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
+        ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
+} static_ASN1_SEQUENCE_END(DSA_SIG)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG, DSA_SIG, DSA_SIG)
+
+DSA_SIG *DSA_SIG_new(void)
+{
+    DSA_SIG *sig = OPENSSL_zalloc(sizeof(*sig));
+    if (sig == NULL)
+        DSAerr(DSA_F_DSA_SIG_NEW, ERR_R_MALLOC_FAILURE);
+    return sig;
+}
+
+void DSA_SIG_free(DSA_SIG *sig)
+{
+    if (sig == NULL)
+        return;
+    BN_clear_free(sig->r);
+    BN_clear_free(sig->s);
+    OPENSSL_free(sig);
+}
+
+void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
+{
+    if (pr != NULL)
+        *pr = sig->r;
+    if (ps != NULL)
+        *ps = sig->s;
+}
+
+int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s)
+{
+    if (r == NULL || s == NULL)
+        return 0;
+    BN_clear_free(sig->r);
+    BN_clear_free(sig->s);
+    sig->r = r;
+    sig->s = s;
+    return 1;
+}
+
+/* Override the default free and new methods */
+static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                  void *exarg)
+{
+    if (operation == ASN1_OP_NEW_PRE) {
+        *pval = (ASN1_VALUE *)DSA_new();
+        if (*pval != NULL)
+            return 2;
+        return 0;
+    } else if (operation == ASN1_OP_FREE_PRE) {
+        DSA_free((DSA *)*pval);
+        *pval = NULL;
+        return 2;
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
+        ASN1_SIMPLE(DSA, version, LONG),
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM),
+        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+        ASN1_SIMPLE(DSA, priv_key, CBIGNUM)
+} static_ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
+
+ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM),
+} static_ASN1_SEQUENCE_END_cb(DSA, DSAparams)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
+
+ASN1_SEQUENCE_cb(DSAPublicKey, dsa_cb) = {
+        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM)
+} static_ASN1_SEQUENCE_END_cb(DSA, DSAPublicKey)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
+
+DSA *DSAparams_dup(DSA *dsa)
+{
+    return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
+}
+
+int DSA_sign(int type, const unsigned char *dgst, int dlen,
+             unsigned char *sig, unsigned int *siglen, DSA *dsa)
+{
+    DSA_SIG *s;
+    RAND_seed(dgst, dlen);
+    s = DSA_do_sign(dgst, dlen, dsa);
+    if (s == NULL) {
+        *siglen = 0;
+        return (0);
+    }
+    *siglen = i2d_DSA_SIG(s, &sig);
+    DSA_SIG_free(s);
+    return (1);
+}
+
+/* data has already been hashed (probably with SHA or SHA-1). */
+/*-
+ * returns
+ *      1: correct signature
+ *      0: incorrect signature
+ *     -1: error
+ */
+int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
+               const unsigned char *sigbuf, int siglen, DSA *dsa)
+{
+    DSA_SIG *s;
+    const unsigned char *p = sigbuf;
+    unsigned char *der = NULL;
+    int derlen = -1;
+    int ret = -1;
+
+    s = DSA_SIG_new();
+    if (s == NULL)
+        return (ret);
+    if (d2i_DSA_SIG(&s, &p, siglen) == NULL)
+        goto err;
+    /* Ensure signature uses DER and doesn't have trailing garbage */
+    derlen = i2d_DSA_SIG(s, &der);
+    if (derlen != siglen || memcmp(sigbuf, der, derlen))
+        goto err;
+    ret = DSA_do_verify(dgst, dgst_len, s, dsa);
+ err:
+    OPENSSL_clear_free(der, derlen);
+    DSA_SIG_free(s);
+    return (ret);
+}