diff --git a/library/error.c b/library/error.c
new file mode 100644
index 0000000..4c12d8d
--- /dev/null
+++ b/library/error.c
@@ -0,0 +1,391 @@
+/*
+ *  Error message information
+ *
+ *  Copyright (C) 2006-2010, Brainspark B.V.
+ *
+ *  This file is part of PolarSSL (http://www.polarssl.org)
+ *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ *  All rights reserved.
+ *
+ *  This program 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.
+ *
+ *  This program 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.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_ERROR_C)
+
+#if defined(POLARSSL_AES_C)
+#include "polarssl/aes.h"
+#endif
+
+#if defined(POLARSSL_BASE64_C)
+#include "polarssl/base64.h"
+#endif
+
+#if defined(POLARSSL_BIGNUM_C)
+#include "polarssl/bignum.h"
+#endif
+
+#if defined(POLARSSL_CAMELLIA_C)
+#include "polarssl/camellia.h"
+#endif
+
+#if defined(POLARSSL_DES_C)
+#include "polarssl/des.h"
+#endif
+
+#if defined(POLARSSL_DHM_C)
+#include "polarssl/dhm.h"
+#endif
+
+#if defined(POLARSSL_MD_C)
+#include "polarssl/md.h"
+#endif
+
+#if defined(POLARSSL_NET_C)
+#include "polarssl/net.h"
+#endif
+
+#if defined(POLARSSL_PADLOCK_C)
+#include "polarssl/padlock.h"
+#endif
+
+#if defined(POLARSSL_PEM_C)
+#include "polarssl/pem.h"
+#endif
+
+#if defined(POLARSSL_RSA_C)
+#include "polarssl/rsa.h"
+#endif
+
+#if defined(POLARSSL_SSL_C)
+#include "polarssl/ssl.h"
+#endif
+
+#if defined(POLARSSL_X509_PARSE_C)
+#include "polarssl/x509.h"
+#endif
+
+#if defined(POLARSSL_XTEA_C)
+#include "polarssl/xtea.h"
+#endif
+
+
+#include <string.h>
+
+void error_strerror( int ret, char *buf, size_t buflen )
+{
+    size_t len;
+    int use_ret;
+
+    memset( buf, 0x00, buflen );
+     
+    if( ret < 0 )
+        ret = -ret;
+
+    if( ret & 0xFF80 )
+    {
+        use_ret = ret & 0xFF80;
+
+        // High level error codes
+        //
+#if defined(POLARSSL_DHM_C)
+        if( use_ret == -(POLARSSL_ERR_DHM_BAD_INPUT_DATA) )
+            snprintf( buf, buflen, "DHM - Bad input parameters to function" );
+        if( use_ret == -(POLARSSL_ERR_DHM_READ_PARAMS_FAILED) )
+            snprintf( buf, buflen, "DHM - Reading of the DHM parameters failed" );
+        if( use_ret == -(POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED) )
+            snprintf( buf, buflen, "DHM - Making of the DHM parameters failed" );
+        if( use_ret == -(POLARSSL_ERR_DHM_READ_PUBLIC_FAILED) )
+            snprintf( buf, buflen, "DHM - Reading of the public values failed" );
+        if( use_ret == -(POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED) )
+            snprintf( buf, buflen, "DHM - Makeing of the public value failed" );
+        if( use_ret == -(POLARSSL_ERR_DHM_CALC_SECRET_FAILED) )
+            snprintf( buf, buflen, "DHM - Calculation of the DHM secret failed" );
+#endif /* POLARSSL_DHM_C */
+
+#if defined(POLARSSL_MD_C)
+        if( use_ret == -(POLARSSL_ERR_MD_FEATURE_UNAVAILABLE) )
+            snprintf( buf, buflen, "MD - The selected feature is not available" );
+#endif /* POLARSSL_MD_C */
+
+#if defined(POLARSSL_PEM_C)
+        if( use_ret == -(POLARSSL_ERR_PEM_NO_HEADER_PRESENT) )
+            snprintf( buf, buflen, "PEM - No PEM header found" );
+        if( use_ret == -(POLARSSL_ERR_PEM_INVALID_DATA) )
+            snprintf( buf, buflen, "PEM - PEM string is not as expected" );
+        if( use_ret == -(POLARSSL_ERR_PEM_MALLOC_FAILED) )
+            snprintf( buf, buflen, "PEM - Failed to allocate memory" );
+        if( use_ret == -(POLARSSL_ERR_PEM_INVALID_ENC_IV) )
+            snprintf( buf, buflen, "PEM - RSA IV is not in hex-format" );
+        if( use_ret == -(POLARSSL_ERR_PEM_UNKNOWN_ENC_ALG) )
+            snprintf( buf, buflen, "PEM - Unsupported key encryption algorithm" );
+        if( use_ret == -(POLARSSL_ERR_PEM_PASSWORD_REQUIRED) )
+            snprintf( buf, buflen, "PEM - Private key password can't be empty" );
+        if( use_ret == -(POLARSSL_ERR_PEM_PASSWORD_MISMATCH) )
+            snprintf( buf, buflen, "PEM - Given private key password does not allow for correct decryption" );
+        if( use_ret == -(POLARSSL_ERR_PEM_FEATURE_UNAVAILABLE) )
+            snprintf( buf, buflen, "PEM - Unavailable feature, e.g. hashing/encryption combination" );
+#endif /* POLARSSL_PEM_C */
+
+#if defined(POLARSSL_RSA_C)
+        if( use_ret == -(POLARSSL_ERR_RSA_BAD_INPUT_DATA) )
+            snprintf( buf, buflen, "RSA - Bad input parameters to function" );
+        if( use_ret == -(POLARSSL_ERR_RSA_INVALID_PADDING) )
+            snprintf( buf, buflen, "RSA - Input data contains invalid padding and is rejected" );
+        if( use_ret == -(POLARSSL_ERR_RSA_KEY_GEN_FAILED) )
+            snprintf( buf, buflen, "RSA - Something failed during generation of a key" );
+        if( use_ret == -(POLARSSL_ERR_RSA_KEY_CHECK_FAILED) )
+            snprintf( buf, buflen, "RSA - Key failed to pass the libraries validity check" );
+        if( use_ret == -(POLARSSL_ERR_RSA_PUBLIC_FAILED) )
+            snprintf( buf, buflen, "RSA - The public key operation failed" );
+        if( use_ret == -(POLARSSL_ERR_RSA_PRIVATE_FAILED) )
+            snprintf( buf, buflen, "RSA - The private key operation failed" );
+        if( use_ret == -(POLARSSL_ERR_RSA_VERIFY_FAILED) )
+            snprintf( buf, buflen, "RSA - The PKCS#1 verification failed" );
+        if( use_ret == -(POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE) )
+            snprintf( buf, buflen, "RSA - The output buffer for decryption is not large enough" );
+        if( use_ret == -(POLARSSL_ERR_RSA_RNG_FAILED) )
+            snprintf( buf, buflen, "RSA - The random generator failed to generate non-zeros" );
+#endif /* POLARSSL_RSA_C */
+
+#if defined(POLARSSL_SSL_C)
+        if( use_ret == -(POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE) )
+            snprintf( buf, buflen, "SSL - The requested feature is not available" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_INPUT_DATA) )
+            snprintf( buf, buflen, "SSL - Bad input parameters to function" );
+        if( use_ret == -(POLARSSL_ERR_SSL_INVALID_MAC) )
+            snprintf( buf, buflen, "SSL - Verification of the message MAC failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_INVALID_RECORD) )
+            snprintf( buf, buflen, "SSL - An invalid SSL record was received" );
+        if( use_ret == -(POLARSSL_ERR_SSL_INVALID_MODULUS_SIZE) )
+            snprintf( buf, buflen, "SSL - An invalid modulus size was received" );
+        if( use_ret == -(POLARSSL_ERR_SSL_UNKNOWN_CIPHER) )
+            snprintf( buf, buflen, "SSL - An unknown cipher was received" );
+        if( use_ret == -(POLARSSL_ERR_SSL_NO_CIPHER_CHOSEN) )
+            snprintf( buf, buflen, "SSL - The server has no ciphersuites in common with the client" );
+        if( use_ret == -(POLARSSL_ERR_SSL_NO_SESSION_FOUND) )
+            snprintf( buf, buflen, "SSL - No session to recover was found" );
+        if( use_ret == -(POLARSSL_ERR_SSL_NO_CLIENT_CERTIFICATE) )
+            snprintf( buf, buflen, "SSL - No client certification received from the client, but required by the authentication mode" );
+        if( use_ret == -(POLARSSL_ERR_SSL_CERTIFICATE_TOO_LARGE) )
+            snprintf( buf, buflen, "SSL - DESCRIPTION MISSING" );
+        if( use_ret == -(POLARSSL_ERR_SSL_CERTIFICATE_REQUIRED) )
+            snprintf( buf, buflen, "SSL - The own certificate is not set, but needed by the server" );
+        if( use_ret == -(POLARSSL_ERR_SSL_PRIVATE_KEY_REQUIRED) )
+            snprintf( buf, buflen, "SSL - The own private key is not set, but needed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_CA_CHAIN_REQUIRED) )
+            snprintf( buf, buflen, "SSL - No CA Chain is set, but required to operate" );
+        if( use_ret == -(POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE) )
+            snprintf( buf, buflen, "SSL - An unexpected message was received from our peer" );
+        if( use_ret == -(POLARSSL_ERR_SSL_FATAL_ALERT_MESSAGE) )
+            snprintf( buf, buflen, "SSL - A fatal alert message was received from our peer" );
+        if( use_ret == -(POLARSSL_ERR_SSL_PEER_VERIFY_FAILED) )
+            snprintf( buf, buflen, "SSL - Verification of our peer failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY) )
+            snprintf( buf, buflen, "SSL - The peer notified us that the connection is going to be closed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO) )
+            snprintf( buf, buflen, "SSL - Processing of the ClientHello handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_HELLO) )
+            snprintf( buf, buflen, "SSL - Processing of the ServerHello handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE) )
+            snprintf( buf, buflen, "SSL - Processing of the Certificate handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST) )
+            snprintf( buf, buflen, "SSL - Processing of the CertificateRequest handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE) )
+            snprintf( buf, buflen, "SSL - Processing of the ServerKeyExchange handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_HELLO_DONE) )
+            snprintf( buf, buflen, "SSL - Processing of the ServerHelloDone handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE) )
+            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_DHM_RP) )
+            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM Read Public" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_DHM_CS) )
+            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM Calculate Secret" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY) )
+            snprintf( buf, buflen, "SSL - Processing of the CertificateVerify handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC) )
+            snprintf( buf, buflen, "SSL - Processing of the ChangeCipherSpec handshake message failed" );
+        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_FINISHED) )
+            snprintf( buf, buflen, "SSL - Processing of the Finished handshake message failed" );
+#endif /* POLARSSL_SSL_C */
+
+#if defined(POLARSSL_X509_PARSE_C)
+        if( use_ret == -(POLARSSL_ERR_X509_FEATURE_UNAVAILABLE) )
+            snprintf( buf, buflen, "X509 - Unavailable feature, e.g. RSA hashing/encryption combination" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_PEM) )
+            snprintf( buf, buflen, "X509 - The PEM-encoded certificate contains invalid elements, e.g. invalid character" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_FORMAT) )
+            snprintf( buf, buflen, "X509 - The certificate format is invalid, e.g. different type expected" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_VERSION) )
+            snprintf( buf, buflen, "X509 - The certificate version element is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_SERIAL) )
+            snprintf( buf, buflen, "X509 - The serial tag or value is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_ALG) )
+            snprintf( buf, buflen, "X509 - The algorithm tag or value is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_NAME) )
+            snprintf( buf, buflen, "X509 - The name tag or value is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_DATE) )
+            snprintf( buf, buflen, "X509 - The date tag or value is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_PUBKEY) )
+            snprintf( buf, buflen, "X509 - The pubkey tag or value is invalid (only RSA is supported)" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE) )
+            snprintf( buf, buflen, "X509 - The signature tag or value invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS) )
+            snprintf( buf, buflen, "X509 - The extension tag or value is invalid" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION) )
+            snprintf( buf, buflen, "X509 - Certificate or CRL has an unsupported version number" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG) )
+            snprintf( buf, buflen, "X509 - Signature algorithm (oid) is unsupported" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_UNKNOWN_PK_ALG) )
+            snprintf( buf, buflen, "X509 - Public key algorithm is unsupported (only RSA is supported)" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_SIG_MISMATCH) )
+            snprintf( buf, buflen, "X509 - Certificate signature algorithms do not match. (see \\c ::x509_cert sig_oid)" );
+        if( use_ret == -(POLARSSL_ERR_X509_CERT_VERIFY_FAILED) )
+            snprintf( buf, buflen, "X509 - Certificate verification failed, e.g. CRL, CA or signature check failed" );
+        if( use_ret == -(POLARSSL_ERR_X509_KEY_INVALID_VERSION) )
+            snprintf( buf, buflen, "X509 - Unsupported RSA key version" );
+        if( use_ret == -(POLARSSL_ERR_X509_KEY_INVALID_FORMAT) )
+            snprintf( buf, buflen, "X509 - Invalid RSA key tag or value" );
+        if( use_ret == -(POLARSSL_ERR_X509_POINT_ERROR) )
+            snprintf( buf, buflen, "X509 - Not used" );
+        if( use_ret == -(POLARSSL_ERR_X509_VALUE_TO_LENGTH) )
+            snprintf( buf, buflen, "X509 - Not used" );
+#endif /* POLARSSL_X509_PARSE_C */
+
+        if( strlen( buf ) == 0 )
+            snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
+    }
+
+    use_ret = ret & ~0xFF80;
+
+    if( use_ret == 0 )
+        return;
+
+    // If high level code is present, make a concatenation between both
+    // error strings.
+    //
+    len = strlen( buf );
+
+    if( len > 0 )
+    {
+        if( buflen - len < 5 )
+            return;
+
+        snprintf( buf + len, buflen - len, " : " );
+
+        buf += len + 3;
+        buflen -= len + 3;
+    }
+
+    // Low level error codes
+    //
+#if defined(POLARSSL_AES_C)
+    if( use_ret == -(POLARSSL_ERR_AES_INVALID_KEY_LENGTH) )
+        snprintf( buf, buflen, "AES - Invalid key length" );
+    if( use_ret == -(POLARSSL_ERR_AES_INVALID_INPUT_LENGTH) )
+        snprintf( buf, buflen, "AES - Invalid data input length" );
+#endif /* POLARSSL_AES_C */
+
+#if defined(POLARSSL_BASE64_C)
+    if( use_ret == -(POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) )
+        snprintf( buf, buflen, "BASE64 - Output buffer too small" );
+    if( use_ret == -(POLARSSL_ERR_BASE64_INVALID_CHARACTER) )
+        snprintf( buf, buflen, "BASE64 - Invalid character in input" );
+#endif /* POLARSSL_BASE64_C */
+
+#if defined(POLARSSL_BIGNUM_C)
+    if( use_ret == -(POLARSSL_ERR_MPI_FILE_IO_ERROR) )
+        snprintf( buf, buflen, "BIGNUM - An error occurred while reading from or writing to a file" );
+    if( use_ret == -(POLARSSL_ERR_MPI_BAD_INPUT_DATA) )
+        snprintf( buf, buflen, "BIGNUM - Bad input parameters to function" );
+    if( use_ret == -(POLARSSL_ERR_MPI_INVALID_CHARACTER) )
+        snprintf( buf, buflen, "BIGNUM - There is an invalid character in the digit string" );
+    if( use_ret == -(POLARSSL_ERR_MPI_BUFFER_TOO_SMALL) )
+        snprintf( buf, buflen, "BIGNUM - The output buffer is too small to write too" );
+    if( use_ret == -(POLARSSL_ERR_MPI_NEGATIVE_VALUE) )
+        snprintf( buf, buflen, "BIGNUM - The input arguments are negative or result in illegal output" );
+    if( use_ret == -(POLARSSL_ERR_MPI_DIVISION_BY_ZERO) )
+        snprintf( buf, buflen, "BIGNUM - The input argument for division is zero, which is not allowed" );
+    if( use_ret == -(POLARSSL_ERR_MPI_NOT_ACCEPTABLE) )
+        snprintf( buf, buflen, "BIGNUM - The input arguments are not acceptable" );
+#endif /* POLARSSL_BIGNUM_C */
+
+#if defined(POLARSSL_CAMELLIA_C)
+    if( use_ret == -(POLARSSL_ERR_CAMELLIA_INVALID_KEY_LENGTH) )
+        snprintf( buf, buflen, "CAMELLIA - Invalid key length" );
+    if( use_ret == -(POLARSSL_ERR_CAMELLIA_INVALID_INPUT_LENGTH) )
+        snprintf( buf, buflen, "CAMELLIA - Invalid data input length" );
+#endif /* POLARSSL_CAMELLIA_C */
+
+#if defined(POLARSSL_DES_C)
+    if( use_ret == -(POLARSSL_ERR_DES_INVALID_INPUT_LENGTH) )
+        snprintf( buf, buflen, "DES - The data input has an invalid length" );
+#endif /* POLARSSL_DES_C */
+
+#if defined(POLARSSL_NET_C)
+    if( use_ret == -(POLARSSL_ERR_NET_UNKNOWN_HOST) )
+        snprintf( buf, buflen, "NET - Failed to get an IP address for the given hostname" );
+    if( use_ret == -(POLARSSL_ERR_NET_SOCKET_FAILED) )
+        snprintf( buf, buflen, "NET - Failed to open a socket" );
+    if( use_ret == -(POLARSSL_ERR_NET_CONNECT_FAILED) )
+        snprintf( buf, buflen, "NET - The connection to the given server / port failed" );
+    if( use_ret == -(POLARSSL_ERR_NET_BIND_FAILED) )
+        snprintf( buf, buflen, "NET - Binding of the socket failed" );
+    if( use_ret == -(POLARSSL_ERR_NET_LISTEN_FAILED) )
+        snprintf( buf, buflen, "NET - Could not listen on the socket" );
+    if( use_ret == -(POLARSSL_ERR_NET_ACCEPT_FAILED) )
+        snprintf( buf, buflen, "NET - Could not accept the incoming connection" );
+    if( use_ret == -(POLARSSL_ERR_NET_RECV_FAILED) )
+        snprintf( buf, buflen, "NET - Reading information from the socket failed" );
+    if( use_ret == -(POLARSSL_ERR_NET_SEND_FAILED) )
+        snprintf( buf, buflen, "NET - Sending information through the socket failed" );
+    if( use_ret == -(POLARSSL_ERR_NET_CONN_RESET) )
+        snprintf( buf, buflen, "NET - Connection was reset by peer" );
+    if( use_ret == -(POLARSSL_ERR_NET_TRY_AGAIN) )
+        snprintf( buf, buflen, "NET - Connection was busy, try again" );
+#endif /* POLARSSL_NET_C */
+
+#if defined(POLARSSL_PADLOCK_C)
+    if( use_ret == -(POLARSSL_ERR_PADLOCK_DATA_MISALIGNED) )
+        snprintf( buf, buflen, "PADLOCK - Input data should be aligned" );
+#endif /* POLARSSL_PADLOCK_C */
+
+#if defined(POLARSSL_X509_PARSE_C)
+    if( use_ret == -(POLARSSL_ERR_ASN1_OUT_OF_DATA) )
+        snprintf( buf, buflen, "ASN1 - Out of data when parsing an ASN1 data structure" );
+    if( use_ret == -(POLARSSL_ERR_ASN1_UNEXPECTED_TAG) )
+        snprintf( buf, buflen, "ASN1 - ASN1 tag was of an unexpected value" );
+    if( use_ret == -(POLARSSL_ERR_ASN1_INVALID_LENGTH) )
+        snprintf( buf, buflen, "ASN1 - Error when trying to determine the length or invalid length" );
+    if( use_ret == -(POLARSSL_ERR_ASN1_LENGTH_MISMATCH) )
+        snprintf( buf, buflen, "ASN1 - Actual length differs from expected length" );
+    if( use_ret == -(POLARSSL_ERR_ASN1_INVALID_DATA) )
+        snprintf( buf, buflen, "ASN1 - Data is invalid. (not used)" );
+#endif /* POLARSSL_X509_PARSE_C */
+
+#if defined(POLARSSL_XTEA_C)
+    if( use_ret == -(POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH) )
+        snprintf( buf, buflen, "XTEA - The data input has an invalid length" );
+#endif /* POLARSSL_XTEA_C */
+
+    if( strlen( buf ) != 0 )
+        return;
+
+    snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
+}
+
+#endif /* POLARSSL_VERBOSE_ERROR */