Struct ECIES 

pub struct ECIES;

ECIES encryption with Electrum and Bitcore variants.

Electrum uses BIE1 magic bytes, derives IV from ECDH shared secret, and uses AES-128-CBC.

Bitcore uses a random IV prepended to ciphertext, derives a 32-byte key from ECDH shared secret, and uses AES-256-CBC.

Implementations

impl ECIES

pub fn electrum_encrypt( plaintext: &[u8], recipient_pub_key: &PublicKey, sender_priv_key: Option<&PrivateKey>, ) -> Result<Vec<u8>, CompatError>

Encrypt plaintext using the Electrum ECIES variant (BIE1 format).

Format: “BIE1” (4 bytes) || ephemeral_pubkey (33 bytes) || ciphertext || HMAC (32 bytes)

If sender_priv_key is provided, it is used instead of an ephemeral key.

pub fn electrum_decrypt( ciphertext: &[u8], recipient_priv_key: &PrivateKey, ) -> Result<Vec<u8>, CompatError>

Decrypt ciphertext using the Electrum ECIES variant (BIE1 format).

Expects format: “BIE1” (4) || pubkey (33) || ciphertext || HMAC (32) Minimum length: 4 + 33 + 16 + 32 = 85 (at least one AES block)

pub fn bitcore_encrypt( plaintext: &[u8], recipient_pub_key: &PublicKey, sender_priv_key: Option<&PrivateKey>, ) -> Result<Vec<u8>, CompatError>

Encrypt plaintext using the Bitcore ECIES variant.

Format: ephemeral_pubkey (33) || iv (16) || aes_ciphertext || HMAC (32) HMAC is over iv + aes_ciphertext only (not including pubkey).

Uses AES-256-CBC with a 32-byte key derived from ECDH.

pub fn bitcore_decrypt( ciphertext: &[u8], recipient_priv_key: &PrivateKey, ) -> Result<Vec<u8>, CompatError>

Decrypt ciphertext using the Bitcore ECIES variant.

Expects format: pubkey (33) || iv (16) || aes_ciphertext || HMAC (32) HMAC is verified over iv + aes_ciphertext only.