Nettle VAPI

namespace Nettle
{
    [CCode (has_target = false)]
    public delegate void CryptFunc(void* ctx, uint length, uint8* dst, uint8* src);

    [CCode (cname = "struct aes_ctx", cprefix = "aes_", cheader_filename = "nettle/aes.h")]
    public struct AES
    {
        public void set_encrypt_key(uint length, uint8* key);
        public void set_decrypt_key(uint length, uint8* key);
        public void invert_key(AES *src);
        public void encrypt(uint length, uint8* dst, uint8* src);
        public void decrypt(uint length, uint8* dst, uint8* src);
    }

    [CCode (cname = "cbc_encrypt", cheader_filename = "nettle/cbc.h")]
    public void cbc_encrypt(void* ctx, CryptFunc f, uint block_size, uint8* iv, uint length, uint8* dst, uint8* src);

    [CCode (cname = "cbc_decrypt", cheader_filename = "nettle/cbc.h")]
    public void cbc_decrypt(void* ctx, CryptFunc f, uint block_size, uint8* iv, uint length, uint8* dst, uint8* src);

    [CCode (cname = "AES_BLOCK_SIZE", cheader_filename = "nettle/aes.h")]
    public const int AES_BLOCK_SIZE;
}