获得OpenSSL的EVP API的EVP_OpenInit）错误（RSA解密，在C [英] Getting error in EVP_OpenInit() of OpenSSL EVP api for RSA decryption, in C

查看：1150 发布时间：2016/8/19 0:35:00 c encryption openssl rsa public-key-encryption

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问题描述

我在RSA解密使用OpenSSL库（EVP API）面临的一个问题。
这里是我的code密钥生成

I am facing a problem in RSA decryption using OpenSSL Library (EVP api). Here is my code for key generation

#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/rsa.h>
#include <openssl/bio.h>
#include <openssl/pem.h>

#define SECFILE "sec.pem"
#define PUBFILE "pub.pem"

int main()
{

    EVP_PKEY_CTX *ctx;
    EVP_PKEY *pkey = NULL;
    ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, NULL);
    FILE *fp;

    if (!ctx)
    {
        /* Error occurred */
        perror("Error in CTX \n");

    }
    if (EVP_PKEY_keygen_init(ctx) <= 0)
    {
        /* Error */
        perror("Error in EVP_PKEY_keygen_init \n");
    }
    if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, 2048) <= 0)
    {
        /* Error */
        perror("Error in EVP_PKEY_CTX_set_rsa_keygen_bits \n");
    }
    /* Generate key */
    if (EVP_PKEY_keygen(ctx, &pkey) <= 0)
    {   
        /* Error */
        perror("Error in EVP_PKEY_keygen \n");

    }


    fp = fopen(SECFILE, "w");
    PEM_write_PrivateKey(fp, pkey, NULL,NULL, 0,0, NULL);
    fclose(fp);

    fp = fopen(PUBFILE, "w");
    PEM_write_PUBKEY(fp,pkey);
    fclose(fp);


    return 0;
}

有关加密：

我用这个<一个href=\"http://stackoverflow.com/questions/2012645/can-you-help-me-get-my-head-around-openssl-public-key-encryption-with-rsa-h-in-c\">link

有关解密：

   int do_evp_open(FILE *rsa_pkey_file, FILE *in_file, FILE *out_file) 
{ 
    int retval = 0; 
    RSA *rsa_pkey = NULL; 
    EVP_PKEY *pkey = EVP_PKEY_new(); 
    EVP_CIPHER_CTX ctx; 
    unsigned char buffer[4096]; 
    unsigned char buffer_out[4096 + EVP_MAX_IV_LENGTH]; 
    size_t len; 
    int len_out; 
    unsigned char *ek; 
    int eklen ; 
    uint32_t eklen_n; 
    unsigned char iv[EVP_MAX_IV_LENGTH] = {122,205,106,192,4,183,69,176,84,28,214,226,220,140,86,174}; 


    /// Read RSA Private Key 
    if (PEM_read_RSAPrivateKey(rsa_pkey_file, &rsa_pkey, NULL, NULL) == NULL) 
    { 
        fprintf(stderr, "Error loading RSA Private Key File.\n"); 
        ERR_print_errors_fp(stderr); 
        retval = -2; 
        goto out; 
    } 


    /// Assign RSA key to EVP key
    if (!EVP_PKEY_assign_RSA(pkey, rsa_pkey)) 
    { 
        fprintf(stderr, "EVP_PKEY_assign_RSA: failed.\n"); 
        retval = -3; 
        goto out; 
    }

    EVP_CIPHER_CTX_init(&ctx); 

    ek = malloc( EVP_PKEY_size(pkey)); 



    if (!EVP_OpenInit(&ctx, EVP_aes_128_cbc(), ek, eklen, iv,pkey)) 
    { 
        fprintf(stderr, "EVP_OpenInit: failed.\n"); 
       ERR_print_errors_fp(stderr); /// Prints error of occured in Openssl  
        retval = -3; 
        goto out_free; 
    } 




    while ((len = fread(buffer, 1, sizeof buffer, in_file)) > 0) 
    { 
        if (!EVP_OpenUpdate(&ctx, buffer_out, &len_out, buffer, len)) 
        { 
            fprintf(stderr, "EVP_OpenUpdate: failed.\n"); 
            retval = 3; 
            goto out_free; 
        } 

        if (fwrite(buffer_out, len_out, 1, out_file) != 1) 
        { 
            perror("output file"); 
            retval = -5; 
            goto out_free; 
        } 
    } 

    if (ferror(in_file)) 
    { 
        perror("input file"); 
        retval = -4; 
        goto out_free; 
    } 

    if (!EVP_OpenFinal(&ctx, buffer_out, &len_out)) 
    { 
        fprintf(stderr, "EVP_OpenFinal: failed.\n"); 
        retval = - 3; 
        goto out_free; 
    } 

    if (fwrite(buffer_out, len_out, 1, out_file) != 1) 
    { 
        perror("output file"); 
        retval = -5; 
        goto out_free; 
    } 

    out_free: 
    EVP_PKEY_free(pkey); 
    free(ek); 

    out: 
    return retval; 
}

我的私人和公共键是：

My Private and public keys are :

我得到在EVP_OpenInit的错误是：

The error I am getting While EVP_OpenInit is :

140004942804648：错误：0407106B：LIB（4）：FUNC（113）：原因（107）：rsa_pk1.c：190：140004942804648：错误：04065072：LIB（4）：FUNC（101 ）：原因（114）：rsa_eay.c：594

任何帮助将是AP preciated。
谢谢，
爬完

Any help would be appreciated. Thanks, Pawan

获得OpenSSL的EVP API的EVP_OpenInit）错误（RSA解密，在C [英] Getting error in EVP_OpenInit() of OpenSSL EVP api for RSA decryption, in C

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获得OpenSSL的EVP API的EVP_OpenInit）错误（RSA解密，在C [英] Getting error in EVP_OpenInit() of OpenSSL EVP api for RSA decryption, in C

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