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Linux_Drivers/middleware/v2/sample/cipher/cvi_sample_rsa_enc.c
carbon e6b5f43553 middleware: remains commit d1d59d9af
2023-12-22 16:54:29 +08:00

323 lines
13 KiB
C
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/*
* Copyright (C) Cvitek Co., Ltd. 2019-2020. All rights reserved.
*
* File Name: cvi_sample_rsa_enc.c
* Description:
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <cvi_unf_cipher.h>
#include <cvi_sample_all.h>
static unsigned char test_data[] = { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" };
static unsigned char sha256_sum[32] = {
0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8, 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39,
0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67, 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1,
};
static CVI_U8 N[] = { 0x82, 0x78, 0xA0, 0xC5, 0x39, 0xE6, 0xF6, 0xA1, 0x5E, 0xD1, 0xC6, 0x8B, 0x9C, 0xF9, 0xC4, 0x3F,
0xEA, 0x19, 0x16, 0xB0, 0x96, 0x3A, 0xB0, 0x5A, 0x94, 0xED, 0x6A, 0xD3, 0x83, 0xE8, 0xA0, 0xFD,
0x01, 0x5E, 0x92, 0x2A, 0x7D, 0x0D, 0xF9, 0x72, 0x1E, 0x03, 0x8A, 0x68, 0x8B, 0x4D, 0x57, 0x55,
0xF5, 0x2F, 0x9A, 0xC9, 0x45, 0xCF, 0x9B, 0xB7, 0xF5, 0x11, 0x94, 0x7A, 0x16, 0x0B, 0xED, 0xD9,
0xA3, 0xF0, 0x63, 0x8A, 0xEC, 0xD3, 0x21, 0xAB, 0xCF, 0x74, 0xFC, 0x6B, 0xCE, 0x06, 0x4A, 0x51,
0xC9, 0x7C, 0x7C, 0xA3, 0xC4, 0x10, 0x63, 0x7B, 0x00, 0xEC, 0x2D, 0x02, 0x18, 0xD5, 0xF1, 0x8E,
0x19, 0x7F, 0xBE, 0xE2, 0x45, 0x5E, 0xD7, 0xA8, 0x95, 0x90, 0x88, 0xB0, 0x73, 0x35, 0x89, 0x66,
0x1C, 0x23, 0xB9, 0x6E, 0x88, 0xE0, 0x7A, 0x57, 0xB0, 0x55, 0x8B, 0x81, 0x9B, 0x9C, 0x34, 0x9F,
0x86, 0x0E, 0x15, 0x94, 0x2C, 0x6B, 0x12, 0xC3, 0xB9, 0x56, 0x60, 0x25, 0x59, 0x3E, 0x50, 0x7B,
0x62, 0x4A, 0xD0, 0xF0, 0xB6, 0xB1, 0x94, 0x83, 0x51, 0x66, 0x6F, 0x60, 0x4D, 0xEF, 0x8F, 0x94,
0xA6, 0xD1, 0xA2, 0x80, 0x06, 0x24, 0xF2, 0x6E, 0xD2, 0xC7, 0x01, 0x34, 0x8D, 0x2B, 0x6B, 0x03,
0xF7, 0x05, 0xA3, 0x99, 0xCC, 0xC5, 0x16, 0x75, 0x1A, 0x81, 0xC1, 0x67, 0xA0, 0x88, 0xE6, 0xE9,
0x00, 0xFA, 0x62, 0xAF, 0x2D, 0xA9, 0xFA, 0xC3, 0x30, 0x34, 0x98, 0x05, 0x4C, 0x1A, 0x81, 0x0C,
0x52, 0xCE, 0xBA, 0xD6, 0xEB, 0x9C, 0x1E, 0x76, 0x01, 0x41, 0x6C, 0x34, 0xFB, 0xC0, 0x83, 0xC5,
0x4E, 0xB3, 0xF2, 0x5B, 0x4F, 0x94, 0x08, 0x33, 0x87, 0x5E, 0xF8, 0x39, 0xEF, 0x7F, 0x72, 0x94,
0xFF, 0xD7, 0x51, 0xE8, 0xA2, 0x5E, 0x26, 0x25, 0x5F, 0xE9, 0xCC, 0x2A, 0x7D, 0xAC, 0x5B, 0x35 };
static CVI_U8 E[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01 };
static CVI_U8 D[] = {
0x49, 0x7E, 0x93, 0xE9, 0xA5, 0x7D, 0x42, 0x0E, 0x92, 0xB0, 0x0E, 0x6C, 0x94, 0xC7, 0x69, 0x52, 0x2B, 0x97,
0x68, 0x5D, 0x9E, 0xB2, 0x7E, 0xA6, 0xF7, 0xDF, 0x69, 0x5E, 0xAE, 0x9E, 0x7B, 0x19, 0x2A, 0x0D, 0x50, 0xBE,
0xD8, 0x64, 0xE7, 0xCF, 0xED, 0xB2, 0x46, 0xE4, 0x2F, 0x1C, 0x29, 0x07, 0x45, 0xAF, 0x44, 0x3C, 0xFE, 0xB3,
0x3C, 0xDF, 0x7A, 0x10, 0x26, 0x18, 0x43, 0x95, 0x02, 0xAD, 0xA7, 0x98, 0x81, 0x2A, 0x3F, 0xCF, 0x8A, 0xD7,
0x12, 0x6C, 0xAE, 0xC8, 0x37, 0x6C, 0xF9, 0xAE, 0x6A, 0x96, 0x52, 0x4B, 0x99, 0xE5, 0x35, 0x74, 0x93, 0x87,
0x76, 0xAF, 0x08, 0xB8, 0x73, 0x72, 0x7D, 0x50, 0xA5, 0x81, 0x26, 0x5C, 0x8F, 0x94, 0xEA, 0x73, 0x59, 0x5C,
0x33, 0xF9, 0xC3, 0x65, 0x1E, 0x92, 0xCD, 0x20, 0xC3, 0xBF, 0xD7, 0x8A, 0xCF, 0xCC, 0xD0, 0x61, 0xF8, 0xFB,
0x1B, 0xF4, 0xB6, 0x0F, 0xD4, 0xCF, 0x3E, 0x55, 0x48, 0x4C, 0x99, 0x2D, 0x40, 0x44, 0x7C, 0xBA, 0x7B, 0x6F,
0xDB, 0x5D, 0x71, 0x91, 0x2D, 0x93, 0x80, 0x19, 0xE3, 0x26, 0x5D, 0x59, 0xBE, 0x46, 0x6D, 0x90, 0x4B, 0xDF,
0x72, 0xCE, 0x6C, 0x69, 0x72, 0x8F, 0x5B, 0xA4, 0x74, 0x50, 0x2A, 0x42, 0x95, 0xB2, 0x19, 0x04, 0x88, 0xD7,
0xDA, 0xBB, 0x17, 0x23, 0x69, 0xF4, 0x52, 0xEB, 0xC8, 0x55, 0xBE, 0xBC, 0x2E, 0xA9, 0xD0, 0x57, 0x7D, 0xC6,
0xC8, 0x8B, 0x86, 0x7B, 0x73, 0xCD, 0xE4, 0x32, 0x79, 0xC0, 0x75, 0x53, 0x53, 0xE7, 0x59, 0x38, 0x0A, 0x8C,
0xEC, 0x06, 0xA9, 0xFC, 0xA5, 0x15, 0x81, 0x61, 0x3E, 0x44, 0xCD, 0x05, 0xF8, 0x54, 0x04, 0x00, 0x79, 0xB2,
0x0D, 0x69, 0x2A, 0x47, 0x60, 0x1A, 0x2B, 0x79, 0x3D, 0x4B, 0x50, 0x8A, 0x31, 0x72, 0x48, 0xBB, 0x75, 0x78,
0xD6, 0x35, 0x90, 0xE1,
};
static CVI_U8 NO_PADDING[] = { 0x31, 0x5d, 0xfa, 0x52, 0xa4, 0x93, 0x52, 0xf8, 0xf5, 0xed, 0x39, 0xf4, 0xf8, 0x23, 0x4b,
0x30, 0x11, 0xa2, 0x2c, 0x5b, 0xa9, 0x8c, 0xcf, 0xdf, 0x19, 0x66, 0xf5, 0xf5, 0x1a, 0x6d,
0xf6, 0x25, 0x89, 0xaf, 0x06, 0x13, 0xdc, 0xa4, 0xd4, 0x0b, 0x3c, 0x1c, 0x4f, 0xb9, 0xd3,
0xd0, 0x63, 0x29, 0x2a, 0x5d, 0xfe, 0xb6, 0x99, 0x20, 0x58, 0x36, 0x2b, 0x1d, 0x57, 0xf4,
0x71, 0x38, 0xa7, 0x8b, 0xad, 0x8c, 0xef, 0x1f, 0x2f, 0xea, 0x4c, 0x87, 0x2b, 0xd7, 0xb8,
0xc8, 0xb8, 0x09, 0xcb, 0xb9, 0x05, 0xab, 0x43, 0x41, 0xd9, 0x75, 0x36, 0x4d, 0xb6, 0x8a,
0xd3, 0x45, 0x96, 0xfd, 0x9c, 0xe8, 0x6e, 0xc8, 0x37, 0x5e, 0x4f, 0x63, 0xf4, 0x1c, 0x18,
0x2c, 0x38, 0x79, 0xe2, 0x5a, 0xe5, 0x1d, 0x48, 0xf6, 0xb2, 0x79, 0x57, 0x12, 0xab, 0xae,
0xc1, 0xb1, 0x9d, 0x11, 0x4f, 0xa1, 0x4d, 0x1b, 0x4c, 0x8c, 0x3a, 0x2d, 0x7b, 0x98, 0xb9,
0x89, 0x7b, 0x38, 0x84, 0x13, 0x8e, 0x3f, 0x3c, 0xe8, 0x59, 0x26, 0x90, 0x77, 0xe7, 0xca,
0x52, 0xbf, 0x3a, 0x5e, 0xe2, 0x58, 0x54, 0xd5, 0x9b, 0x2a, 0x0d, 0x33, 0x31, 0xf4, 0x4d,
0x68, 0x68, 0xf3, 0xe9, 0xb2, 0xbe, 0x28, 0xeb, 0xce, 0xdb, 0x36, 0x1e, 0xae, 0xb7, 0x37,
0xca, 0xaa, 0xf0, 0x9c, 0x6e, 0x27, 0x93, 0xc9, 0x61, 0x76, 0x99, 0x1a, 0x0a, 0x99, 0x57,
0xa8, 0xea, 0x71, 0x96, 0x63, 0xbc, 0x76, 0x11, 0x5c, 0x0c, 0xd4, 0x70, 0x0b, 0xd8, 0x1c,
0x4e, 0x95, 0x89, 0x5b, 0x09, 0x17, 0x08, 0x44, 0x70, 0xec, 0x60, 0x7c, 0xc9, 0x8a, 0xa0,
0xe8, 0x98, 0x64, 0xfa, 0xe7, 0x52, 0x73, 0xb0, 0x04, 0x9d, 0x78, 0xee, 0x09, 0xa1, 0xb9,
0x79, 0xd5, 0x52, 0x4f, 0xf2, 0x39, 0x1c, 0xf7, 0xb9, 0x73, 0xe0, 0x3d, 0x6b, 0x54, 0x64,
0x86 };
static CVI_S32 PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_E enScheme, CVI_U8 *pu8Expect)
{
CVI_S32 ret = CVI_SUCCESS;
CVI_U8 *u8Enc = CVI_NULL;
CVI_U8 *u8Dec = CVI_NULL;
CVI_U32 u32OutLen;
CVI_UNF_CIPHER_RSA_PUB_ENC_S stRsaEnc;
CVI_UNF_CIPHER_RSA_PRI_ENC_S stRsaDec;
ret = CVI_UNF_CIPHER_Init();
if (ret != CVI_SUCCESS) {
CVI_ERR_CIPHER("cipher init failed.\n");
return ret;
}
memset(&stRsaEnc, 0, sizeof(CVI_UNF_CIPHER_RSA_PUB_ENC_S));
memset(&stRsaDec, 0, sizeof(CVI_UNF_CIPHER_RSA_PRI_ENC_S));
u8Enc = (CVI_U8 *)malloc(256);
if (u8Enc == CVI_NULL) {
CVI_ERR_CIPHER("malloc for u8Enc failed\n");
ret = CVI_FAILURE;
goto cleanup;
}
u8Dec = (CVI_U8 *)malloc(256);
if (u8Dec == CVI_NULL) {
CVI_ERR_CIPHER("malloc for u8Dec failed\n");
ret = CVI_FAILURE;
goto cleanup;
}
stRsaEnc.enScheme = enScheme;
stRsaEnc.stPubKey.pu8N = N;
stRsaEnc.stPubKey.pu8E = E;
stRsaEnc.stPubKey.u16NLen = sizeof(N);
stRsaEnc.stPubKey.u16ELen = sizeof(E);
if (enScheme == CVI_UNF_CIPHER_RSA_ENC_SCHEME_NO_PADDING) {
ret = CVI_UNF_CIPHER_RsaPublicEncrypt(&stRsaEnc, NO_PADDING, 256, u8Enc, &u32OutLen);
} else {
ret = CVI_UNF_CIPHER_RsaPublicEncrypt(&stRsaEnc, test_data, sizeof(test_data) - 1, u8Enc, &u32OutLen);
}
if (ret != CVI_SUCCESS) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPublicEnc failed\n");
goto cleanup;
}
if (pu8Expect != CVI_NULL) {
if (memcmp(u8Enc, pu8Expect, u32OutLen) != 0) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPublicEnc failed\n");
CVI_Test_PrintBuffer("enc", u8Enc, u32OutLen);
CVI_Test_PrintBuffer("expect", pu8Expect, 256);
goto cleanup;
}
}
stRsaDec.enScheme = enScheme;
stRsaDec.stPriKey.pu8N = N;
stRsaDec.stPriKey.pu8D = D;
stRsaDec.stPriKey.u16NLen = sizeof(N);
stRsaDec.stPriKey.u16DLen = sizeof(D);
ret = CVI_UNF_CIPHER_RsaPrivateDecrypt(&stRsaDec, u8Enc, u32OutLen, u8Dec, &u32OutLen);
if (ret != CVI_SUCCESS) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaVerify failed\n");
goto cleanup;
}
if (enScheme == CVI_UNF_CIPHER_RSA_ENC_SCHEME_NO_PADDING) {
if (memcmp(u8Dec, NO_PADDING, 256) != 0) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPrivateDec failed\n");
CVI_Test_PrintBuffer("enc", u8Enc, u32OutLen);
CVI_Test_PrintBuffer("expect", NO_PADDING, 256);
goto cleanup;
}
} else {
if ((sizeof(test_data) - 1) != u32OutLen) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPrivateDec len error\n");
printf("dec: 0x%x, expect: %zu\n", u32OutLen, sizeof(test_data) - 1);
goto cleanup;
}
if (memcmp(u8Dec, test_data, sizeof(test_data) - 1) != 0) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPrivateDec failed\n");
CVI_Test_PrintBuffer("enc", u8Enc, u32OutLen);
CVI_Test_PrintBuffer("expect", test_data, sizeof(test_data) - 1);
goto cleanup;
}
}
TEST_END_PASS();
CVI_UNF_CIPHER_DeInit();
if (u8Enc != CVI_NULL) {
free(u8Enc);
u8Enc = CVI_NULL;
}
if (u8Dec != CVI_NULL) {
free(u8Dec);
u8Dec = CVI_NULL;
}
return CVI_SUCCESS;
cleanup:
CVI_UNF_CIPHER_DeInit();
if (u8Enc != CVI_NULL) {
free(u8Enc);
u8Enc = CVI_NULL;
}
if (u8Dec != CVI_NULL) {
free(u8Dec);
u8Dec = CVI_NULL;
}
return CVI_FAILURE;
}
static CVI_S32 PKCS_PRI_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_E enScheme)
{
CVI_S32 ret = CVI_SUCCESS;
CVI_U8 u8Sign[256];
CVI_U32 u32SignLen;
CVI_U8 u8Hash[32];
CVI_U32 u32HLen;
CVI_UNF_CIPHER_RSA_PRI_ENC_S stRsaEnc;
CVI_UNF_CIPHER_RSA_PUB_ENC_S stRsaDec;
ret = CVI_UNF_CIPHER_Init();
if (ret != CVI_SUCCESS) {
return CVI_FAILURE;
}
memset(&stRsaEnc, 0, sizeof(CVI_UNF_CIPHER_RSA_PRI_ENC_S));
memset(&stRsaDec, 0, sizeof(CVI_UNF_CIPHER_RSA_PUB_ENC_S));
stRsaEnc.enScheme = enScheme;
stRsaDec.enScheme = enScheme;
{
stRsaEnc.stPriKey.pu8N = N;
stRsaEnc.stPriKey.pu8D = D;
stRsaEnc.stPriKey.u16NLen = sizeof(N);
stRsaEnc.stPriKey.u16DLen = sizeof(D);
stRsaDec.stPubKey.pu8N = N;
stRsaDec.stPubKey.pu8E = E;
stRsaDec.stPubKey.u16NLen = sizeof(N);
stRsaDec.stPubKey.u16ELen = sizeof(E);
}
ret = CVI_UNF_CIPHER_RsaPrivateEncrypt(&stRsaEnc, sha256_sum, sizeof(sha256_sum), u8Sign, &u32SignLen);
if (ret != CVI_SUCCESS) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPrivateEncrypt failed\n");
CVI_UNF_CIPHER_DeInit();
return ret;
}
switch (enScheme) {
case CVI_UNF_CIPHER_RSA_ENC_SCHEME_BLOCK_TYPE_1:
break;
default:
break;
}
ret = CVI_UNF_CIPHER_RsaPublicDecrypt(&stRsaDec, u8Sign, u32SignLen, u8Hash, &u32HLen);
if (ret != CVI_SUCCESS) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPublicDecrypt failed\n");
CVI_UNF_CIPHER_DeInit();
return ret;
}
switch (enScheme) {
case CVI_UNF_CIPHER_RSA_ENC_SCHEME_BLOCK_TYPE_1:
if (memcmp(u8Hash, sha256_sum, u32HLen) != 0) {
CVI_ERR_CIPHER("CVI_UNF_CIPHER_RsaPublicDec failed\n");
CVI_Test_PrintBuffer("sign", u8Sign, u32SignLen);
CVI_Test_PrintBuffer("sha256_sum", sha256_sum, sizeof(sha256_sum));
CVI_UNF_CIPHER_DeInit();
return CVI_FAILURE;
}
break;
default:
break;
}
TEST_END_PASS();
CVI_UNF_CIPHER_DeInit();
return CVI_SUCCESS;
}
int sample_rsa_enc(void)
{
CVI_S32 s32Ret = CVI_SUCCESS;
s32Ret = PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_NO_PADDING, CVI_NULL);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
s32Ret = PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_BLOCK_TYPE_2, CVI_NULL);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
s32Ret = PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_RSAES_OAEP_SHA1, CVI_NULL);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
s32Ret = PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_RSAES_OAEP_SHA256, CVI_NULL);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
printf("CVI_UNF_CIPHER_RSA_ENC_SCHEME_RSAES_PKCS1_V1_5\n");
s32Ret = PKCS_PUB_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_RSAES_PKCS1_V1_5, CVI_NULL);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
printf("CVI_UNF_CIPHER_RSA_ENC_SCHEME_BLOCK_TYPE_1\n");
s32Ret = PKCS_PRI_ENC(CVI_UNF_CIPHER_RSA_ENC_SCHEME_BLOCK_TYPE_1);
if (s32Ret != CVI_SUCCESS) {
return s32Ret;
}
return CVI_SUCCESS;
}
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