X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fpk%2Fasn1%2Fder%2Fboolean%2Fder_decode_boolean.c;fp=libtomcrypt%2Fsrc%2Fpk%2Fasn1%2Fder%2Fboolean%2Fder_decode_boolean.c;h=da60ca9029c65546756d2fb5aef5844a149b02a6;hb=66bc25938679f1d6a1d1200f329093d82a5e99b4;hp=0000000000000000000000000000000000000000;hpb=a52ee0733f420ca20224049260d6fc5cf7d8f621;p=zpackage

diff --git a/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c b/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c
new file mode 100644
index 0000000..da60ca9
--- /dev/null
+++ b/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c
@@ -0,0 +1,45 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+#include "tomcrypt.h"
+
+/**
+  @file der_decode_boolean.c
+  ASN.1 DER, decode a BOOLEAN, Tom St Denis
+*/
+
+
+#ifdef LTC_DER
+
+/**
+  Read a BOOLEAN
+  @param in      The destination for the DER encoded BOOLEAN
+  @param inlen   The size of the DER BOOLEAN
+  @param out     [out]  The boolean to decode
+  @return CRYPT_OK if successful
+*/
+int der_decode_boolean(const unsigned char *in, unsigned long inlen,
+                                       int *out)
+{
+   LTC_ARGCHK(in  != NULL);
+   LTC_ARGCHK(out != NULL);
+
+   if (inlen < 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) {
+      return CRYPT_INVALID_ARG;
+   }
+
+   *out = (in[2]==0xFF) ? 1 : 0;
+
+   return CRYPT_OK;
+}
+
+#endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */