当我运行 OpenSSL CMS 加密和解密演示时,我收到以下错误:
Error Decrypting Data
2900476676:error:0200B009:system library:fread:Bad file descriptor:bss_file.c:245:
2900476676:error:20082002:BIO routines:FILE_READ:system lib:bss_file.c:246:
2900476676:error:0606506D:digital envelope routines:EVP_DecryptFinal_ex:wrong final block length:evp_enc.c:460:
它发生在CMS_decrypt()
方法中。
有谁知道出了什么问题?
更新#1:
我正在使用objective-c中的库(并且也在C++中尝试过)。 它发生在本节:
int error = CMS_decrypt(cms, rkey, rcert, /*out*/ bout, NULL, 0);
if (!error) {
fprintf(stderr, "Error Decrypting Data\n");
ERR_print_errors_fp(stderr);
printf("error code: %d\n", ERR_get_error());
assert(false);
}
更新#2:
添加了完整的解密源。
- (void) decryptOrig {
BIO *in = NULL, *out = NULL, *tbio = NULL;
X509 *rcert = NULL;
EVP_PKEY *rkey = NULL;
CMS_ContentInfo *cms = NULL;
int ret = 1;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *iosPathToFile = [NSString stringWithFormat:@"%@/encrypted.enc", documentsDirectory]; //[[NSBundle mainBundle] pathForResource:@"encrypted" ofType:@"enc"];
NSString *iosPathToCertificate = [[NSBundle mainBundle] pathForResource:@"signer" ofType:@"pem"];
NSString *iosPathToKey = [[NSBundle mainBundle] pathForResource:@"christof" ofType:@"key"];
NSString *iosPathToOrigFinal = [NSString stringWithFormat:@"%@/original.txt", documentsDirectory];
OpenSSL_add_all_algorithms();
ERR_load_crypto_strings();
/* Read in recipient certificate and private key */
tbio = BIO_new_file([iosPathToCertificate cStringUsingEncoding:NSUTF8StringEncoding], "r");
if (!tbio)
goto err;
rcert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
/*BIO *output = BIO_new(BIO_s_mem());
X509_print(output, rcert);
char *temp = malloc(50000);
BIO_read(output, temp, 50000);
printf("cert: %s", temp);*/
//temp for output
BIO *bout = BIO_new_fp (stdout, BIO_NOCLOSE);
BIO_reset(tbio);
rkey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
//EVP_PKEY_print_private(bout, rkey, 0, NULL);
if (!rcert || !rkey)
goto err;
/* Open S/MIME message to decrypt */
in = BIO_new_file([iosPathToFile cStringUsingEncoding:NSUTF8StringEncoding], "r");
if (!in)
goto err;
/* Parse message */
cms = SMIME_read_CMS(in, NULL);
//CMS_ContentInfo_print_ctx(bout, cms, 0, NULL);
if (!cms)
goto err;
out = BIO_new_file([iosPathToOrigFinal cStringUsingEncoding:NSUTF8StringEncoding], "w");
NSLog(iosPathToOrigFinal);
/*char *mytestoutput = malloc(50000);
memset(mytestoutput, 0, 50000);
out = BIO_new_mem_buf(mytestoutput, 50000);*/
if (!out)
assert(false);
/* Decrypt S/MIME message */
int error = CMS_decrypt(cms, rkey, rcert, out, NULL, 0);
if (!error) {
fprintf(stderr, "Error Decrypting Data\n");
ERR_print_errors_fp(stderr);
printf("error code: %d\n", ERR_get_error());
assert(false);
}
ret = 0;
err:
if (ret)
{
fprintf(stderr, "Error Decrypting Data\n");
ERR_print_errors_fp(stderr);
}
if (cms)
CMS_ContentInfo_free(cms);
if (rcert)
X509_free(rcert);
if (rkey)
EVP_PKEY_free(rkey);
if (in)
BIO_free(in);
if (out)
BIO_free(out);
if (tbio)
BIO_free(tbio);
return ret;
}
我已删除bout
并out
在加密方法中使用了
更新#3:
对称加密类型可能有问题吗?CBC等...?