A simple CyaSSL-based HMAC-MD5 implementation. Licensed under GPL v2.

Dependents:   RFrec_full RFtrans_full

The output will be base64-encoded, with trailing "==", like this:

j62o/jZsAZD9i9m+32lIuQ==

Example

#include "mbed.h"
#include "hmac_md5.h"

Serial pc(USBTX, USBRX); // tx, rx

void main(void)
{
    
    const char * key = "MySecretKey";
    
    const char * text = "message to be signed";
    
    char output[26];
    
    HMAC_MD5(key, text, output);

    printf("result = %s\n", output);

    while(true){}
}
Revision:
0:83f3dcfa5c8f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/error.h	Wed Feb 06 20:35:03 2013 +0000
@@ -0,0 +1,118 @@
+/* error.h
+ *
+ * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
+ *
+ * This file is part of CyaSSL.
+ *
+ * CyaSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * CyaSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+
+#ifndef CTAO_CRYPT_ERROR_H
+#define CTAO_CRYPT_ERROR_H
+
+#include "types.h"
+
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+
+/* error codes */
+enum {
+    MAX_ERROR_SZ       =  80,   /* max size of error string */
+    MAX_CODE_E         = -100,  /* errors -101 - -199 */
+    OPEN_RAN_E         = -101,  /* opening random device error */
+    READ_RAN_E         = -102,  /* reading random device error */
+    WINCRYPT_E         = -103,  /* windows crypt init error */
+    CRYPTGEN_E         = -104,  /* windows crypt generation error */
+    RAN_BLOCK_E        = -105,  /* reading random device would block */
+
+    MP_INIT_E          = -110,  /* mp_init error state */
+    MP_READ_E          = -111,  /* mp_read error state */
+    MP_EXPTMOD_E       = -112,  /* mp_exptmod error state */
+    MP_TO_E            = -113,  /* mp_to_xxx error state, can't convert */
+    MP_SUB_E           = -114,  /* mp_sub error state, can't subtract */
+    MP_ADD_E           = -115,  /* mp_add error state, can't add */
+    MP_MUL_E           = -116,  /* mp_mul error state, can't multiply */
+    MP_MULMOD_E        = -117,  /* mp_mulmod error state, can't multiply mod */
+    MP_MOD_E           = -118,  /* mp_mod error state, can't mod */
+    MP_INVMOD_E        = -119,  /* mp_invmod error state, can't inv mod */
+    MP_CMP_E           = -120,  /* mp_cmp error state */
+    MP_ZERO_E          = -121,  /* got a mp zero result, not expected */
+
+    MEMORY_E           = -125,  /* out of memory error */
+
+    RSA_WRONG_TYPE_E   = -130,  /* RSA wrong block type for RSA function */
+    RSA_BUFFER_E       = -131,  /* RSA buffer error, output too small or 
+                                   input too large */
+    BUFFER_E           = -132,  /* output buffer too small or input too large */
+    ALGO_ID_E          = -133,  /* setting algo id error */
+    PUBLIC_KEY_E       = -134,  /* setting public key error */
+    DATE_E             = -135,  /* setting date validity error */
+    SUBJECT_E          = -136,  /* setting subject name error */
+    ISSUER_E           = -137,  /* setting issuer  name error */
+    CA_TRUE_E          = -138,  /* setting CA basic constraint true error */
+    EXTENSIONS_E       = -139,  /* setting extensions error */
+
+    ASN_PARSE_E        = -140,  /* ASN parsing error, invalid input */
+    ASN_VERSION_E      = -141,  /* ASN version error, invalid number */
+    ASN_GETINT_E       = -142,  /* ASN get big int error, invalid data */
+    ASN_RSA_KEY_E      = -143,  /* ASN key init error, invalid input */
+    ASN_OBJECT_ID_E    = -144,  /* ASN object id error, invalid id */
+    ASN_TAG_NULL_E     = -145,  /* ASN tag error, not null */
+    ASN_EXPECT_0_E     = -146,  /* ASN expect error, not zero */
+    ASN_BITSTR_E       = -147,  /* ASN bit string error, wrong id */
+    ASN_UNKNOWN_OID_E  = -148,  /* ASN oid error, unknown sum id */
+    ASN_DATE_SZ_E      = -149,  /* ASN date error, bad size */
+    ASN_BEFORE_DATE_E  = -150,  /* ASN date error, current date before */
+    ASN_AFTER_DATE_E   = -151,  /* ASN date error, current date after */
+    ASN_SIG_OID_E      = -152,  /* ASN signature error, mismatched oid */
+    ASN_TIME_E         = -153,  /* ASN time error, unknown time type */
+    ASN_INPUT_E        = -154,  /* ASN input error, not enough data */
+    ASN_SIG_CONFIRM_E  = -155,  /* ASN sig error, confirm failure */
+    ASN_SIG_HASH_E     = -156,  /* ASN sig error, unsupported hash type */
+    ASN_SIG_KEY_E      = -157,  /* ASN sig error, unsupported key type */
+    ASN_DH_KEY_E       = -158,  /* ASN key init error, invalid input */
+    ASN_NTRU_KEY_E     = -159,  /* ASN ntru key decode error, invalid input */
+
+    ECC_BAD_ARG_E      = -170,  /* ECC input argument of wrong type */
+    ASN_ECC_KEY_E      = -171,  /* ASN ECC bad input */
+    ECC_CURVE_OID_E    = -172,  /* Unsupported ECC OID curve type */
+    BAD_FUNC_ARG       = -173,  /* Bad function argument provided */
+    NOT_COMPILED_IN    = -174,  /* Feature not compiled in */
+    UNICODE_SIZE_E     = -175,  /* Unicode password too big */
+    NO_PASSWORD        = -176,  /* no password provided by user */
+    ALT_NAME_E         = -177,  /* alt name size problem, too big */
+
+    AES_GCM_AUTH_E     = -180,  /* AES-GCM Authentication check failure */
+    AES_CCM_AUTH_E     = -181,  /* AES-CCM Authentication check failure */
+
+    CAVIUM_INIT_E      = -182,  /* Cavium Init type error */
+
+    MIN_CODE_E         = -200   /* errors -101 - -199 */
+};
+
+
+CYASSL_API void CTaoCryptErrorString(int error, char* buffer);
+
+
+#ifdef __cplusplus
+    } /* extern "C" */
+#endif
+
+#endif /* CTAO_CRYPT_ERROR_H */
+