CODEWITHSUNDEEP
openssl
user1327371
user1327371

Reputation: 33

OpenSSL Base64 decoding

I am trying to use openSSL library for Base64 decoding followed by CMS usage to verify signature.

Below code always print buffer as NULL.

char signed_data[] = "MIIO";
int signed_data_length = sizeof(signed_data);

BIO *b64, *bmem;

char *buffer = (char *)malloc(signed_data_length);
memset(buffer, 0, signed_data_length);

b64 = BIO_new(BIO_f_base64());
bmem = BIO_new_mem_buf(signed_data, signed_data_length);
bmem = BIO_push(b64, bmem);

BIO_read(bmem, buffer, signed_data_length);
printf("%s", buffer);

Upvotes: 2

Views: 1360

Answers (1)

Karthik
Karthik

Reputation: 750

Add BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL) after the BIO_new() call to tell OpenSSL that all the input appears in a single line without newline.

Upvotes: 3

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