GHASHsource
func GHASH(key *[16]byte, inputs ...[]byte) []byteGHASH is exposed to allow crypto/cipher to implement non-AES GCM modes. It is not allowed as a stand-alone operation in FIPS mode because it is not ACVP tested.
package
gcm
crypto/internal/fips140/v1.0.0-c2097c7c/aes/gcm
Functions
SealWithRandomNoncesource
func SealWithRandomNonce(g *GCM, nonce, out, plaintext, additionalData []byte)SealWithRandomNonce encrypts plaintext to out, and writes a random nonce to nonce. nonce must be 12 bytes, and out must be 16 bytes longer than plaintext. out and plaintext may overlap exactly or not at all. additionalData and out must not overlap.
This complies with FIPS 140-3 IG C.H Scenario 2.
Note that this is NOT a [cipher.AEAD].Seal method.
type CMAC source
type CMAC struct {
// contains filtered or unexported fields
}CMAC implements the CMAC mode from NIST SP 800-38B.
It is optimized for use in Counter KDF (SP 800-108r1) and XAES-256-GCM (https://c2sp.org/XAES-256-GCM), rather than for exposing it to applications as a stand-alone MAC.
type CounterKDF source
type CounterKDF struct {
// contains filtered or unexported fields
}CounterKDF implements a KDF in Counter Mode instantiated with CMAC-AES, according to NIST SP 800-108 Revision 1 Update 1, Section 4.1.
It produces a 256-bit output, and accepts a 8-bit Label and a 96-bit Context. It uses a counter of 16 bits placed before the fixed data. The fixed data is the sequence Label || 0x00 || Context. The L field is omitted, since the output key length is fixed.
It's optimized for use in XAES-256-GCM (https://c2sp.org/XAES-256-GCM), rather than for exposing it to applications as a stand-alone KDF.
Constructors
NewCounterKDFsource
func NewCounterKDF(b *aes.Block) *CounterKDFNewCounterKDF creates a new CounterKDF with the given key.
type GCM source
type GCM struct {
// contains filtered or unexported fields
}GCM represents a Galois Counter Mode with a specific key.
type GCMForSSH source
type GCMForSSH struct {
// contains filtered or unexported fields
}Constructors
NewGCMForSSHsource
func NewGCMForSSH(cipher *aes.Block) (*GCMForSSH, error)NewGCMForSSH returns a new AEAD that works like GCM, but enforces the construction of nonces as specified in RFC 5647.
This complies with FIPS 140-3 IG C.H Scenario 1.d.
type GCMForTLS12 source
type GCMForTLS12 struct {
// contains filtered or unexported fields
}Constructors
NewGCMForTLS12source
func NewGCMForTLS12(cipher *aes.Block) (*GCMForTLS12, error)NewGCMForTLS12 returns a new AEAD that works like GCM, but enforces the construction of nonces as specified in RFC 5288, Section 3 and RFC 9325, Section 7.2.1.
This complies with FIPS 140-3 IG C.H Scenario 1.a.
type GCMForTLS13 source
type GCMForTLS13 struct {
// contains filtered or unexported fields
}Constructors
NewGCMForTLS13source
func NewGCMForTLS13(cipher *aes.Block) (*GCMForTLS13, error)NewGCMForTLS13 returns a new AEAD that works like GCM, but enforces the construction of nonces as specified in RFC 8446, Section 5.3.
type GCMWithCounterNonce source
type GCMWithCounterNonce struct {
// contains filtered or unexported fields
}Constructors
NewGCMWithCounterNoncesource
func NewGCMWithCounterNonce(cipher *aes.Block) (*GCMWithCounterNonce, error)NewGCMWithCounterNonce returns a new AEAD that works like GCM, but enforces the construction of deterministic nonces. The nonce must be 96 bits, the first 32 bits must be an encoding of the module name, and the last 64 bits must be a counter.
This complies with FIPS 140-3 IG C.H Scenario 3.
Methods
NonceSizesource
func (g *GCMWithCounterNonce) NonceSize() intOpensource
func (g *GCMWithCounterNonce) Open(dst, nonce, ciphertext, data []byte) ([]byte, error)Overheadsource
func (g *GCMWithCounterNonce) Overhead() intSealsource
func (g *GCMWithCounterNonce) Seal(dst, nonce, plaintext, data []byte) []byte