diff options
Diffstat (limited to 'src/gcrypt/kw_des.c')
-rw-r--r-- | src/gcrypt/kw_des.c | 607 |
1 files changed, 607 insertions, 0 deletions
diff --git a/src/gcrypt/kw_des.c b/src/gcrypt/kw_des.c new file mode 100644 index 00000000..b93eb9f5 --- /dev/null +++ b/src/gcrypt/kw_des.c @@ -0,0 +1,607 @@ +/** + * + * XMLSec library + * + * DES Algorithm support + * + * This is free software; see Copyright file in the source + * distribution for preciese wording. + * + * Copyright (C) 2010 Aleksey Sanin <aleksey@aleksey.com> + */ +#ifndef XMLSEC_NO_DES +#include "globals.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include <gcrypt.h> + + +#include <xmlsec/xmlsec.h> +#include <xmlsec/xmltree.h> +#include <xmlsec/keys.h> +#include <xmlsec/transforms.h> +#include <xmlsec/errors.h> + +#include <xmlsec/gcrypt/crypto.h> + +#include "../kw_aes_des.h" + +/********************************************************************* + * + * DES KW implementation + * + *********************************************************************/ +static int xmlSecGCryptKWDes3GenerateRandom (void * context, + xmlSecByte * out, + xmlSecSize outSize); +static int xmlSecGCryptKWDes3Sha1 (void * context, + const xmlSecByte * in, + xmlSecSize inSize, + xmlSecByte * out, + xmlSecSize outSize); +static int xmlSecGCryptKWDes3BlockEncrypt (void * context, + const xmlSecByte * iv, + xmlSecSize ivSize, + const xmlSecByte * in, + xmlSecSize inSize, + xmlSecByte * out, + xmlSecSize outSize); +static int xmlSecGCryptKWDes3BlockDecrypt (void * context, + const xmlSecByte * iv, + xmlSecSize ivSize, + const xmlSecByte * in, + xmlSecSize inSize, + xmlSecByte * out, + xmlSecSize outSize); + +static xmlSecKWDes3Klass xmlSecGCryptKWDes3ImplKlass = { + /* callbacks */ + xmlSecGCryptKWDes3GenerateRandom, /* xmlSecKWDes3GenerateRandomMethod generateRandom; */ + xmlSecGCryptKWDes3Sha1, /* xmlSecKWDes3Sha1Method sha1; */ + xmlSecGCryptKWDes3BlockEncrypt, /* xmlSecKWDes3BlockEncryptMethod encrypt; */ + xmlSecGCryptKWDes3BlockDecrypt, /* xmlSecKWDes3BlockDecryptMethod decrypt; */ + + /* for the future */ + NULL, /* void* reserved0; */ + NULL, /* void* reserved1; */ +}; + +static int xmlSecGCryptKWDes3Encrypt (const xmlSecByte *key, + xmlSecSize keySize, + const xmlSecByte *iv, + xmlSecSize ivSize, + const xmlSecByte *in, + xmlSecSize inSize, + xmlSecByte *out, + xmlSecSize outSize, + int enc); + + +/********************************************************************* + * + * Triple DES Key Wrap transform + * + * key (xmlSecBuffer) is located after xmlSecTransform structure + * + ********************************************************************/ +typedef struct _xmlSecGCryptKWDes3Ctx xmlSecGCryptKWDes3Ctx, + *xmlSecGCryptKWDes3CtxPtr; +struct _xmlSecGCryptKWDes3Ctx { + xmlSecBuffer keyBuffer; +}; +#define xmlSecGCryptKWDes3Size \ + (sizeof(xmlSecTransform) + sizeof(xmlSecGCryptKWDes3Ctx)) +#define xmlSecGCryptKWDes3GetCtx(transform) \ + ((xmlSecGCryptKWDes3CtxPtr)(((xmlSecByte*)(transform)) + sizeof(xmlSecTransform))) + +static int xmlSecGCryptKWDes3Initialize (xmlSecTransformPtr transform); +static void xmlSecGCryptKWDes3Finalize (xmlSecTransformPtr transform); +static int xmlSecGCryptKWDes3SetKeyReq (xmlSecTransformPtr transform, + xmlSecKeyReqPtr keyReq); +static int xmlSecGCryptKWDes3SetKey (xmlSecTransformPtr transform, + xmlSecKeyPtr key); +static int xmlSecGCryptKWDes3Execute (xmlSecTransformPtr transform, + int last, + xmlSecTransformCtxPtr transformCtx); +static xmlSecTransformKlass xmlSecGCryptKWDes3Klass = { + /* klass/object sizes */ + sizeof(xmlSecTransformKlass), /* xmlSecSize klassSize */ + xmlSecGCryptKWDes3Size, /* xmlSecSize objSize */ + + xmlSecNameKWDes3, /* const xmlChar* name; */ + xmlSecHrefKWDes3, /* const xmlChar* href; */ + xmlSecTransformUsageEncryptionMethod, /* xmlSecAlgorithmUsage usage; */ + + xmlSecGCryptKWDes3Initialize, /* xmlSecTransformInitializeMethod initialize; */ + xmlSecGCryptKWDes3Finalize, /* xmlSecTransformFinalizeMethod finalize; */ + NULL, /* xmlSecTransformNodeReadMethod readNode; */ + NULL, /* xmlSecTransformNodeWriteMethod writeNode; */ + xmlSecGCryptKWDes3SetKeyReq, /* xmlSecTransformSetKeyMethod setKeyReq; */ + xmlSecGCryptKWDes3SetKey, /* xmlSecTransformSetKeyMethod setKey; */ + NULL, /* xmlSecTransformValidateMethod validate; */ + xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */ + xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */ + xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */ + NULL, /* xmlSecTransformPushXmlMethod pushXml; */ + NULL, /* xmlSecTransformPopXmlMethod popXml; */ + xmlSecGCryptKWDes3Execute, /* xmlSecTransformExecuteMethod execute; */ + + NULL, /* void* reserved0; */ + NULL, /* void* reserved1; */ +}; + +/** + * xmlSecGCryptTransformKWDes3GetKlass: + * + * The Triple DES key wrapper transform klass. + * + * Returns: Triple DES key wrapper transform klass. + */ +xmlSecTransformId +xmlSecGCryptTransformKWDes3GetKlass(void) { + return(&xmlSecGCryptKWDes3Klass); +} + +static int +xmlSecGCryptKWDes3Initialize(xmlSecTransformPtr transform) { + xmlSecGCryptKWDes3CtxPtr ctx; + int ret; + + xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecGCryptTransformKWDes3Id), -1); + xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecGCryptKWDes3Size), -1); + + ctx = xmlSecGCryptKWDes3GetCtx(transform); + xmlSecAssert2(ctx != NULL, -1); + + ret = xmlSecBufferInitialize(&(ctx->keyBuffer), 0); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecBufferInitialize", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + XMLSEC_ERRORS_NO_MESSAGE); + return(-1); + } + + return(0); +} + +static void +xmlSecGCryptKWDes3Finalize(xmlSecTransformPtr transform) { + xmlSecGCryptKWDes3CtxPtr ctx; + + xmlSecAssert(xmlSecTransformCheckId(transform, xmlSecGCryptTransformKWDes3Id)); + xmlSecAssert(xmlSecTransformCheckSize(transform, xmlSecGCryptKWDes3Size)); + + ctx = xmlSecGCryptKWDes3GetCtx(transform); + xmlSecAssert(ctx != NULL); + + xmlSecBufferFinalize(&(ctx->keyBuffer)); +} + +static int +xmlSecGCryptKWDes3SetKeyReq(xmlSecTransformPtr transform, xmlSecKeyReqPtr keyReq) { + xmlSecGCryptKWDes3CtxPtr ctx; + + xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecGCryptTransformKWDes3Id), -1); + xmlSecAssert2((transform->operation == xmlSecTransformOperationEncrypt) || (transform->operation == xmlSecTransformOperationDecrypt), -1); + xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecGCryptKWDes3Size), -1); + xmlSecAssert2(keyReq != NULL, -1); + + ctx = xmlSecGCryptKWDes3GetCtx(transform); + xmlSecAssert2(ctx != NULL, -1); + + keyReq->keyId = xmlSecGCryptKeyDataDesId; + keyReq->keyType = xmlSecKeyDataTypeSymmetric; + if(transform->operation == xmlSecTransformOperationEncrypt) { + keyReq->keyUsage= xmlSecKeyUsageEncrypt; + } else { + keyReq->keyUsage= xmlSecKeyUsageDecrypt; + } + keyReq->keyBitsSize = 8 * XMLSEC_KW_DES3_KEY_LENGTH; + return(0); +} + +static int +xmlSecGCryptKWDes3SetKey(xmlSecTransformPtr transform, xmlSecKeyPtr key) { + xmlSecGCryptKWDes3CtxPtr ctx; + xmlSecBufferPtr buffer; + xmlSecSize keySize; + int ret; + + xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecGCryptTransformKWDes3Id), -1); + xmlSecAssert2((transform->operation == xmlSecTransformOperationEncrypt) || (transform->operation == xmlSecTransformOperationDecrypt), -1); + xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecGCryptKWDes3Size), -1); + xmlSecAssert2(key != NULL, -1); + xmlSecAssert2(xmlSecKeyDataCheckId(xmlSecKeyGetValue(key), xmlSecGCryptKeyDataDesId), -1); + + ctx = xmlSecGCryptKWDes3GetCtx(transform); + xmlSecAssert2(ctx != NULL, -1); + + buffer = xmlSecKeyDataBinaryValueGetBuffer(xmlSecKeyGetValue(key)); + xmlSecAssert2(buffer != NULL, -1); + + keySize = xmlSecBufferGetSize(buffer); + if(keySize < XMLSEC_KW_DES3_KEY_LENGTH) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + NULL, + XMLSEC_ERRORS_R_INVALID_KEY_DATA_SIZE, + "key length %d is not enough (%d expected)", + keySize, XMLSEC_KW_DES3_KEY_LENGTH); + return(-1); + } + + ret = xmlSecBufferSetData(&(ctx->keyBuffer), xmlSecBufferGetData(buffer), XMLSEC_KW_DES3_KEY_LENGTH); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecBufferSetData", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "size=%d", XMLSEC_KW_DES3_KEY_LENGTH); + return(-1); + } + + return(0); +} + +static int +xmlSecGCryptKWDes3Execute(xmlSecTransformPtr transform, int last, xmlSecTransformCtxPtr transformCtx) { + xmlSecGCryptKWDes3CtxPtr ctx; + xmlSecBufferPtr in, out; + xmlSecSize inSize, outSize, keySize; + int ret; + + xmlSecAssert2(xmlSecTransformCheckId(transform, xmlSecGCryptTransformKWDes3Id), -1); + xmlSecAssert2((transform->operation == xmlSecTransformOperationEncrypt) || (transform->operation == xmlSecTransformOperationDecrypt), -1); + xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecGCryptKWDes3Size), -1); + xmlSecAssert2(transformCtx != NULL, -1); + + ctx = xmlSecGCryptKWDes3GetCtx(transform); + xmlSecAssert2(ctx != NULL, -1); + + keySize = xmlSecBufferGetSize(&(ctx->keyBuffer)); + xmlSecAssert2(keySize == XMLSEC_KW_DES3_KEY_LENGTH, -1); + + in = &(transform->inBuf); + out = &(transform->outBuf); + inSize = xmlSecBufferGetSize(in); + outSize = xmlSecBufferGetSize(out); + xmlSecAssert2(outSize == 0, -1); + + if(transform->status == xmlSecTransformStatusNone) { + transform->status = xmlSecTransformStatusWorking; + } + + if((transform->status == xmlSecTransformStatusWorking) && (last == 0)) { + /* just do nothing */ + } else if((transform->status == xmlSecTransformStatusWorking) && (last != 0)) { + if((inSize % XMLSEC_KW_DES3_BLOCK_LENGTH) != 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + NULL, + XMLSEC_ERRORS_R_INVALID_SIZE, + "%d bytes - not %d bytes aligned", + inSize, XMLSEC_KW_DES3_BLOCK_LENGTH); + return(-1); + } + + if(transform->operation == xmlSecTransformOperationEncrypt) { + /* the encoded key might be 16 bytes longer plus one block just in case */ + outSize = inSize + XMLSEC_KW_DES3_IV_LENGTH + + XMLSEC_KW_DES3_BLOCK_LENGTH + + XMLSEC_KW_DES3_BLOCK_LENGTH; + } else { + /* just in case, add a block */ + outSize = inSize + XMLSEC_KW_DES3_BLOCK_LENGTH; + } + + ret = xmlSecBufferSetMaxSize(out, outSize); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecBufferSetMaxSize", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "size=%d", outSize); + return(-1); + } + + if(transform->operation == xmlSecTransformOperationEncrypt) { + ret = xmlSecKWDes3Encode(&xmlSecGCryptKWDes3ImplKlass, ctx, + xmlSecBufferGetData(in), inSize, + xmlSecBufferGetData(out), outSize); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecKWDes3Encode", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "key=%d,in=%d,out=%d", + keySize, inSize, outSize); + return(-1); + } + outSize = ret; + } else { + ret = xmlSecKWDes3Decode(&xmlSecGCryptKWDes3ImplKlass, ctx, + xmlSecBufferGetData(in), inSize, + xmlSecBufferGetData(out), outSize); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecKWDes3Decode", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "key=%d,in=%d,out=%d", + keySize, inSize, outSize); + return(-1); + } + outSize = ret; + } + + ret = xmlSecBufferSetSize(out, outSize); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecBufferSetSize", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "size=%d", outSize); + return(-1); + } + + ret = xmlSecBufferRemoveHead(in, inSize); + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + "xmlSecBufferRemoveHead", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + "size=%d", inSize); + return(-1); + } + + transform->status = xmlSecTransformStatusFinished; + } else if(transform->status == xmlSecTransformStatusFinished) { + /* the only way we can get here is if there is no input */ + xmlSecAssert2(xmlSecBufferGetSize(&(transform->inBuf)) == 0, -1); + } else { + xmlSecError(XMLSEC_ERRORS_HERE, + xmlSecErrorsSafeString(xmlSecTransformGetName(transform)), + NULL, + XMLSEC_ERRORS_R_INVALID_STATUS, + "status=%d", transform->status); + return(-1); + } + return(0); +} + +/********************************************************************* + * + * DES KW implementation + * + *********************************************************************/ +static int +xmlSecGCryptKWDes3Sha1(void * context, + const xmlSecByte * in, xmlSecSize inSize, + xmlSecByte * out, xmlSecSize outSize) { + xmlSecGCryptKWDes3CtxPtr ctx = (xmlSecGCryptKWDes3CtxPtr)context; + gcry_md_hd_t digestCtx; + unsigned char * res; + unsigned int len; + gcry_error_t err; + + xmlSecAssert2(ctx != NULL, -1); + xmlSecAssert2(in != NULL, -1); + xmlSecAssert2(inSize > 0, -1); + xmlSecAssert2(out != NULL, -1); + xmlSecAssert2(outSize > 0, -1); + + len = gcry_md_get_algo_dlen(GCRY_MD_SHA1); + xmlSecAssert2(outSize >= len, -1); + + err = gcry_md_open(&digestCtx, GCRY_MD_SHA1, GCRY_MD_FLAG_SECURE); /* we are paranoid */ + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_md_open(GCRY_MD_SHA1)", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + return(-1); + } + + gcry_md_write(digestCtx, in, inSize); + + err = gcry_md_final(digestCtx); + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_md_final", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + gcry_md_close(digestCtx); + return(-1); + } + + res = gcry_md_read(digestCtx, GCRY_MD_SHA1); + if(res == NULL) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_md_read(GCRY_MD_SHA1)", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_ERRORS_NO_MESSAGE); + gcry_md_close(digestCtx); + return(-1); + } + + /* done */ + xmlSecAssert2(outSize >= len, -1); + memcpy(out, res, len); + gcry_md_close(digestCtx); + return(len); +} + +static int +xmlSecGCryptKWDes3GenerateRandom(void * context, + xmlSecByte * out, xmlSecSize outSize) { + xmlSecGCryptKWDes3CtxPtr ctx = (xmlSecGCryptKWDes3CtxPtr)context; + + xmlSecAssert2(ctx != NULL, -1); + xmlSecAssert2(out != NULL, -1); + xmlSecAssert2(outSize > 0, -1); + + gcry_randomize(out, outSize, GCRY_STRONG_RANDOM); + return((int)outSize); +} + +static int +xmlSecGCryptKWDes3BlockEncrypt(void * context, + const xmlSecByte * iv, xmlSecSize ivSize, + const xmlSecByte * in, xmlSecSize inSize, + xmlSecByte * out, xmlSecSize outSize) { + xmlSecGCryptKWDes3CtxPtr ctx = (xmlSecGCryptKWDes3CtxPtr)context; + int ret; + + xmlSecAssert2(ctx != NULL, -1); + xmlSecAssert2(xmlSecBufferGetData(&(ctx->keyBuffer)) != NULL, -1); + xmlSecAssert2(xmlSecBufferGetSize(&(ctx->keyBuffer)) >= XMLSEC_KW_DES3_KEY_LENGTH, -1); + xmlSecAssert2(iv != NULL, -1); + xmlSecAssert2(ivSize >= XMLSEC_KW_DES3_IV_LENGTH, -1); + xmlSecAssert2(in != NULL, -1); + xmlSecAssert2(inSize > 0, -1); + xmlSecAssert2(out != NULL, -1); + xmlSecAssert2(outSize >= inSize, -1); + + ret = xmlSecGCryptKWDes3Encrypt(xmlSecBufferGetData(&(ctx->keyBuffer)), + XMLSEC_KW_DES3_KEY_LENGTH, + iv, XMLSEC_KW_DES3_IV_LENGTH, + in, inSize, + out, outSize, + 1); /* encrypt */ + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "xmlSecGCryptKWDes3Encrypt", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + XMLSEC_ERRORS_NO_MESSAGE); + return(-1); + } + + return(ret); +} + +static int +xmlSecGCryptKWDes3BlockDecrypt(void * context, + const xmlSecByte * iv, xmlSecSize ivSize, + const xmlSecByte * in, xmlSecSize inSize, + xmlSecByte * out, xmlSecSize outSize) { + xmlSecGCryptKWDes3CtxPtr ctx = (xmlSecGCryptKWDes3CtxPtr)context; + int ret; + + xmlSecAssert2(ctx != NULL, -1); + xmlSecAssert2(xmlSecBufferGetData(&(ctx->keyBuffer)) != NULL, -1); + xmlSecAssert2(xmlSecBufferGetSize(&(ctx->keyBuffer)) >= XMLSEC_KW_DES3_KEY_LENGTH, -1); + xmlSecAssert2(iv != NULL, -1); + xmlSecAssert2(ivSize >= XMLSEC_KW_DES3_IV_LENGTH, -1); + xmlSecAssert2(in != NULL, -1); + xmlSecAssert2(inSize > 0, -1); + xmlSecAssert2(out != NULL, -1); + xmlSecAssert2(outSize >= inSize, -1); + + ret = xmlSecGCryptKWDes3Encrypt(xmlSecBufferGetData(&(ctx->keyBuffer)), + XMLSEC_KW_DES3_KEY_LENGTH, + iv, XMLSEC_KW_DES3_IV_LENGTH, + in, inSize, + out, outSize, + 0); /* decrypt */ + if(ret < 0) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "xmlSecGCryptKWDes3Encrypt", + XMLSEC_ERRORS_R_XMLSEC_FAILED, + XMLSEC_ERRORS_NO_MESSAGE); + return(-1); + } + return(ret); +} + +static int +xmlSecGCryptKWDes3Encrypt(const xmlSecByte *key, xmlSecSize keySize, + const xmlSecByte *iv, xmlSecSize ivSize, + const xmlSecByte *in, xmlSecSize inSize, + xmlSecByte *out, xmlSecSize outSize, + int enc) { + size_t key_len = gcry_cipher_get_algo_keylen(GCRY_CIPHER_3DES); + size_t block_len = gcry_cipher_get_algo_blklen(GCRY_CIPHER_3DES); + gcry_cipher_hd_t cipherCtx; + gcry_error_t err; + + xmlSecAssert2(key != NULL, -1); + xmlSecAssert2(keySize >= key_len, -1); + xmlSecAssert2(iv != NULL, -1); + xmlSecAssert2(ivSize >= block_len, -1); + xmlSecAssert2(in != NULL, -1); + xmlSecAssert2(inSize > 0, -1); + xmlSecAssert2(out != NULL, -1); + xmlSecAssert2(outSize >= inSize, -1); + + err = gcry_cipher_open(&cipherCtx, GCRY_CIPHER_3DES, GCRY_CIPHER_MODE_CBC, GCRY_CIPHER_SECURE); /* we are paranoid */ + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_cipher_open(GCRY_CIPHER_3DES)", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + return(-1); + } + + err = gcry_cipher_setkey(cipherCtx, key, keySize); + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_cipher_setkey", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + return(-1); + } + + err = gcry_cipher_setiv(cipherCtx, iv, ivSize); + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_cipher_setiv", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + return(-1); + } + + if(enc) { + err = gcry_cipher_encrypt(cipherCtx, out, outSize, in, inSize); + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_cipher_encrypt", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + gcry_cipher_close(cipherCtx); + return(-1); + } + } else { + err = gcry_cipher_decrypt(cipherCtx, out, outSize, in, inSize); + if(err != GPG_ERR_NO_ERROR) { + xmlSecError(XMLSEC_ERRORS_HERE, + NULL, + "gcry_cipher_decrypt", + XMLSEC_ERRORS_R_CRYPTO_FAILED, + XMLSEC_GCRYPT_REPORT_ERROR(err)); + gcry_cipher_close(cipherCtx); + return(-1); + } + } + + /* done */ + gcry_cipher_close(cipherCtx); + return((int)inSize); /* out size == in size */ +} + + +#endif /* XMLSEC_NO_DES */ + |