GCM

GCM

Kind: global class
this: {"{"}GCM{"}"}

• GCM
  • new GCM()
  • .init(nk, key, niv, iv)
  • .add_header(header, len)
  • .add_plain(plain, len) ⇒
  • .add_cipher(cipher, len) ⇒

new GCM()

Creates an instance of GCM

gcM.init(nk, key, niv, iv)

Initialize GCM mode

Kind: instance method of GCM
this: {"{"}GCM{"}"}

Param	Description
nk	is the key length in bytes, 16, 24 or 32
key	the AES key as an array of 16 bytes
niv	the number of bytes in the Initialisation Vector (IV)
iv	the IV

gcM.add_header(header, len)

Add header (material to be authenticated but not encrypted)

Kind: instance method of GCM
this: {"{"}GCM{"}"}

Param	Description
header	is the header material to be added
len	the number of bytes in the header

gcM.add_plain(plain, len) ⇒

Add plaintext and extract ciphertext

Kind: instance method of GCM
Returns: cipher is the ciphertext generated
this: {"{"}GCM{"}"}

Param	Description
plain	is the plaintext material to be added
len	the number of bytes in the plaintext

gcM.add_cipher(cipher, len) ⇒

Add Ciphertext - decrypts to plaintext

Kind: instance method of GCM
Returns: plain is the plaintext material generated
this: {"{"}GCM{"}"}

Param	Description
cipher	is the ciphertext to be added
len	the number of bytes in the plaintext