From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/rsa/rsa_saos.c | 94 ++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/rsa/rsa_saos.c

(limited to 'openssl-1.1.0h/crypto/rsa/rsa_saos.c')

diff --git a/openssl-1.1.0h/crypto/rsa/rsa_saos.c b/openssl-1.1.0h/crypto/rsa/rsa_saos.c
new file mode 100644
index 0000000..9e5fff4
--- /dev/null
+++ b/openssl-1.1.0h/crypto/rsa/rsa_saos.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright 1995-2016 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 <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+
+int RSA_sign_ASN1_OCTET_STRING(int type,
+                               const unsigned char *m, unsigned int m_len,
+                               unsigned char *sigret, unsigned int *siglen,
+                               RSA *rsa)
+{
+    ASN1_OCTET_STRING sig;
+    int i, j, ret = 1;
+    unsigned char *p, *s;
+
+    sig.type = V_ASN1_OCTET_STRING;
+    sig.length = m_len;
+    sig.data = (unsigned char *)m;
+
+    i = i2d_ASN1_OCTET_STRING(&sig, NULL);
+    j = RSA_size(rsa);
+    if (i > (j - RSA_PKCS1_PADDING_SIZE)) {
+        RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,
+               RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
+        return (0);
+    }
+    s = OPENSSL_malloc((unsigned int)j + 1);
+    if (s == NULL) {
+        RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    p = s;
+    i2d_ASN1_OCTET_STRING(&sig, &p);
+    i = RSA_private_encrypt(i, s, sigret, rsa, RSA_PKCS1_PADDING);
+    if (i <= 0)
+        ret = 0;
+    else
+        *siglen = i;
+
+    OPENSSL_clear_free(s, (unsigned int)j + 1);
+    return (ret);
+}
+
+int RSA_verify_ASN1_OCTET_STRING(int dtype,
+                                 const unsigned char *m,
+                                 unsigned int m_len, unsigned char *sigbuf,
+                                 unsigned int siglen, RSA *rsa)
+{
+    int i, ret = 0;
+    unsigned char *s;
+    const unsigned char *p;
+    ASN1_OCTET_STRING *sig = NULL;
+
+    if (siglen != (unsigned int)RSA_size(rsa)) {
+        RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,
+               RSA_R_WRONG_SIGNATURE_LENGTH);
+        return (0);
+    }
+
+    s = OPENSSL_malloc((unsigned int)siglen);
+    if (s == NULL) {
+        RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING);
+
+    if (i <= 0)
+        goto err;
+
+    p = s;
+    sig = d2i_ASN1_OCTET_STRING(NULL, &p, (long)i);
+    if (sig == NULL)
+        goto err;
+
+    if (((unsigned int)sig->length != m_len) ||
+        (memcmp(m, sig->data, m_len) != 0)) {
+        RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING, RSA_R_BAD_SIGNATURE);
+    } else
+        ret = 1;
+ err:
+    ASN1_OCTET_STRING_free(sig);
+    OPENSSL_clear_free(s, (unsigned int)siglen);
+    return (ret);
+}
-- 
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