Arcium TS SDK DocsAes128Cipher
AES-128 cipher in Counter (CTR) mode, using HKDF-SHA3-256 to derive the key from a shared secret. See: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf (Section 6.5) for details on CTR mode.
Constructors
Constructor
new Aes128Cipher(
sharedSecret):Aes128Cipher
Constructs an AES-128 cipher instance using a shared secret. The key is derived using HKDF-SHA3-256.
Parameters
| Parameter | Type | Description |
|---|---|---|
sharedSecret | Uint8Array | The shared secret to derive the AES key from. |
Returns
Aes128Cipher
Properties
| Property | Type |
|---|---|
key | Uint8Array |
Methods
decrypt()
decrypt(
ciphertext,nonce):Uint8Array
Decrypts the ciphertext array in Counter (CTR) mode.
Parameters
| Parameter | Type | Description |
|---|---|---|
ciphertext | Uint8Array | The data to decrypt. |
nonce | Uint8Array | An 8-byte nonce for CTR mode. |
Returns
The decrypted plaintext as a Uint8Array.
Throws
Error if the nonce is not 8 bytes long.
encrypt()
encrypt(
plaintext,nonce):Uint8Array
Encrypts the plaintext array in Counter (CTR) mode.
Parameters
| Parameter | Type | Description |
|---|---|---|
plaintext | Uint8Array | The data to encrypt. |
nonce | Uint8Array | An 8-byte nonce for CTR mode. |
Returns
The encrypted ciphertext as a Uint8Array.
Throws
Error if the nonce is not 8 bytes long.