From f6b8e0eae4374f339487a33e3e4fe5462d5816e1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Sat, 25 Nov 2017 10:16:00 +0100
Subject: New upstream version 2.0.0

---
 ccast/axTLS/asn1.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 mode change 100644 => 100755 ccast/axTLS/asn1.c

(limited to 'ccast/axTLS/asn1.c')

diff --git a/ccast/axTLS/asn1.c b/ccast/axTLS/asn1.c
old mode 100644
new mode 100755
index b082275..b5e678e
--- a/ccast/axTLS/asn1.c
+++ b/ccast/axTLS/asn1.c
@@ -200,6 +200,40 @@ int asn1_get_private_key(const uint8_t *buf, int len, RSA_CTX **rsa_ctx)
     return X509_OK;
 }
 
+/**
+ * Read the modulus and public exponent of an RSA certificate.
+ */
+int asn1_get_public_key(const uint8_t *cert, int *offset, RSA_CTX **rsa_ctx)
+{
+    int ret = X509_NOT_OK, mod_len, pub_len;
+    uint8_t *modulus = NULL, *pub_exp = NULL;
+	int len;
+
+	/* Hmm. Not checking that the two ints are within the squence ... */
+    if ((len = asn1_next_obj(cert, offset, ASN1_SEQUENCE)) < 0)
+        goto end_pub_key;
+
+    if ((mod_len = asn1_get_int(cert, offset, &modulus)) <= 0) {
+		ret = X509_INVALID_PUB_KEY;
+        goto end_pub_key;
+	}
+    if ((pub_len = asn1_get_int(cert, offset, &pub_exp)) <= 0) {
+	    free(modulus);
+		ret = X509_INVALID_PUB_KEY;
+        goto end_pub_key;
+	}
+
+    RSA_pub_key_new(rsa_ctx, modulus, mod_len, pub_exp, pub_len);
+
+    free(modulus);
+    free(pub_exp);
+
+    ret = X509_OK;
+
+end_pub_key:
+    return ret;
+}
+
 /**
  * Get the time of a certificate. Ignore hours/minutes/seconds.
  */
-- 
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