gnutls_cipher_get_key_size - Linux

Overview

The gnutls_cipher_get_key_size() function in GnuTLS is used to retrieve the key size of a given cipher. It takes a cipher handle as input and returns the key size in bits. This function is useful for determining the security strength of a cipher.

Syntax

gnutls_cipher_get_key_size(gnutls_cipher_t cipher);

Options/Flags

None.

Examples

/* Get the key size of a cipher */
gnutls_cipher_t cipher;
int key_size;

gnutls_cipher_init(&cipher);
gnutls_cipher_set_algo(cipher, GNUTLS_CIPHER_AES_256);
key_size = gnutls_cipher_get_key_size(cipher);

printf("The key size of AES-256 is %d bits\n", key_size);

Common Issues

None.

Integration

This function can be used in conjunction with other GnuTLS functions to create a variety of cryptographic applications. For example, it can be used to:

• Determine the security strength of a cipher.
• Select a cipher with a specific key size.
• Create a cipher context with a specific key size.

Related Commands

• gnutls_cipher_init()
• gnutls_cipher_set_algo()
• gnutls_cipher_get_params()