RSA OAEP encryption. More...

#include <rsa.h>

Public Member Functions
	RsaOaepEncrypt (RsaPublicKey &, Hash::Algorithm=Hash::sha1_type)
	Construct an RSA encryptor. More...

int	max_msg_size () const
	The maximum allowable plain text size in bytes. More...

int	cipher_size () const
	Cipher text size in bytes. More...

void	encrypt (const void , int, void , int, const void *=nullptr, int=0)
	Encrypt a message. More...

Detailed Description

RSA OAEP encryption.

Encrypts using OAEP scheme. Requires a public key, and choice of hash algorithm.

Definition at line 328 of file rsa.h.

Constructor & Destructor Documentation

scc::crypto::RsaOaepEncrypt::RsaOaepEncrypt	(	RsaPublicKey &	,
		Hash::Algorithm	= `Hash::sha1_type`
	)

Construct an RSA encryptor.

Parameters

key	Valid public key.
hash_type	Hash algorithm from scc::crypto::Hash.

int scc::crypto::RsaOaepEncrypt::cipher_size ( ) const

Cipher text size in bytes.

len(public key width)

void scc::crypto::RsaOaepEncrypt::encrypt	(	const void *	,
		int	,
		void *	,
		int	,
		const void *	= `nullptr`,
		int	= `0`
	)

Encrypt a message.

Parameters

msg_loc	Plaintext message buffer
msg_len	Plaintext size, must be <= max_msg_len()
cipher_loc	Encrypted ciphertext buffer
cipher_len	Ciphertext size, must be exactly cipher_len()
label_loc	Optional label, which will be verified but not encrypted
label_len	Label length

Throws exception on parameter error.

int scc::crypto::RsaOaepEncrypt::max_msg_size ( ) const

The maximum allowable plain text size in bytes.

len(public key width) - 2*size(hash output) - 2

The documentation for this class was generated from the following file: