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Diffstat (limited to 'ext/ipp/sources/ippcp/pcprsa_verifysing_pkcs1v15.h')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcprsa_verifysing_pkcs1v15.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcprsa_verifysing_pkcs1v15.h b/ext/ipp/sources/ippcp/pcprsa_verifysing_pkcs1v15.h new file mode 100644 index 0000000..1866046 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcprsa_verifysing_pkcs1v15.h @@ -0,0 +1,96 @@ +/******************************************************************************* +* Copyright 2013-2018 Intel Corporation +* All Rights Reserved. +* +* If this software was obtained under the Intel Simplified Software License, +* the following terms apply: +* +* The source code, information and material ("Material") contained herein is +* owned by Intel Corporation or its suppliers or licensors, and title to such +* Material remains with Intel Corporation or its suppliers or licensors. The +* Material contains proprietary information of Intel or its suppliers and +* licensors. The Material is protected by worldwide copyright laws and treaty +* provisions. No part of the Material may be used, copied, reproduced, +* modified, published, uploaded, posted, transmitted, distributed or disclosed +* in any way without Intel's prior express written permission. No license under +* any patent, copyright or other intellectual property rights in the Material +* is granted to or conferred upon you, either expressly, by implication, +* inducement, estoppel or otherwise. Any license under such intellectual +* property rights must be express and approved by Intel in writing. +* +* Unless otherwise agreed by Intel in writing, you may not remove or alter this +* notice or any other notice embedded in Materials by Intel or Intel's +* suppliers or licensors in any way. +* +* +* If this software was obtained under the Apache License, Version 2.0 (the +* "License"), the following terms apply: +* +* You may not use this file except in compliance with the License. You may +* obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 +* +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* +* See the License for the specific language governing permissions and +* limitations under the License. +*******************************************************************************/ + +/* +// +// Purpose: +// Cryptography Primitive. +// RSASSA-PKCS-v1_5 +// +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpngrsa.h" +#include "pcphash.h" +#include "pcptool.h" + +#include "pcprsa_emsa_pkcs1v15.h" + +static int VerifySing(const Ipp8u* pMsg, int msgLen, /* message representation */ + const Ipp8u* pSalt, int saltLen, /* fied string */ + const Ipp8u* pSign, + int* pIsValid, + const IppsRSAPublicKeyState* pKey, + BNU_CHUNK_T* pBuffer) +{ + /* size of RSA modulus in bytes and chunks */ + cpSize rsaBits = RSA_PUB_KEY_BITSIZE_N(pKey); + cpSize k = BITS2WORD8_SIZE(rsaBits); + cpSize nsN = BITS_BNU_CHUNK(rsaBits); + + /* temporary BNs */ + __ALIGN8 IppsBigNumState bnC; + __ALIGN8 IppsBigNumState bnP; + + /* make BNs */ + BN_Make(pBuffer, pBuffer + nsN + 1, nsN, &bnC); + pBuffer += (nsN + 1) * 2; + BN_Make(pBuffer, pBuffer + nsN + 1, nsN, &bnP); + pBuffer += (nsN + 1) * 2; + + /* + // public-key operation + */ + ippsSetOctString_BN(pSign, k, &bnP); + gsRSApub_cipher(&bnC, &bnP, pKey, pBuffer); + + /* convert EM into the string */ + ippsGetOctString_BN((Ipp8u*)(BN_BUFFER(&bnC)), k, &bnC); + + /* EMSA-PKCS-v1_5 encoding */ + if (EMSA_PKCSv15(pMsg, msgLen, pSalt, saltLen, (Ipp8u*)(BN_NUMBER(&bnC)), k)) { + *pIsValid = 1 == EquBlock((Ipp8u*)(BN_BUFFER(&bnC)), (Ipp8u*)(BN_NUMBER(&bnC)), k); + return 1; + } + else + return 0; +}
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