library/org.samfun.ktvine.crypto

Package-level declarations

Functions

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suspend fun aesCbcDecrypt(key: ByteArray, iv: ByteArray, data: ByteArray): ByteArray

AES-CBC decrypt with PKCS#7 padding handling determined by cipher.

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suspend fun aesCbcDecryptNoPadding(key: ByteArray, iv: ByteArray, data: ByteArray): ByteArray

Alias to match existing call sites expecting explicit no-padding naming.

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suspend fun aesCbcEncryptNoPadding(key: ByteArray, iv: ByteArray, plaintextNoPad: ByteArray): ByteArray

AES-CBC encrypt without internal padding. Provide PKCS#7 padded plaintext.

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suspend fun aesCmac(key: ByteArray, data: ByteArray): ByteArray

Compute AES-CMAC (RFC 4493) over data with a raw AES key.

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fun constantTimeEquals(a: ByteArray, b: ByteArray): Boolean

Compare two byte arrays without an early exit, so the position of the first differing byte is not observable through timing. Lengths are still compared directly.

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suspend fun hmacSha256(key: ByteArray, data: ByteArray): ByteArray

Compute HMAC-SHA256 over data with key.

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fun pkcs7Pad(data: ByteArray, blockSize: Int = 16): ByteArray

Apply PKCS#7 padding to data for blockSize bytes (default 16).

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fun pkcs7Unpad(data: ByteArray, blockSize: Int = 16): ByteArray

Remove PKCS#7 padding from data.

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fun randomBytes(count: Int): ByteArray

Generate count cryptographically strong random bytes.

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fun randomInt(from: Int, until: Int): Int

Generate a cryptographically strong random Int in [from, until).

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suspend fun rsaOaepDecrypt(privateKeyDer: ByteArray, data: ByteArray): ByteArray

Decrypt with RSA-OAEP (SHA-1) using a PKCS#1 DER private key.

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suspend fun rsaOaepEncrypt(publicKeyDer: ByteArray, data: ByteArray): ByteArray

Encrypt with RSA-OAEP (SHA-1) using a PKCS#1 DER public key.

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suspend fun rsaPssSignSha1(privateKeyDer: ByteArray, data: ByteArray): ByteArray

Sign data with RSA-PSS (SHA-1) using a PKCS#1 DER private key.

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suspend fun rsaPssVerifySha1(publicKeyDer: ByteArray, data: ByteArray, signature: ByteArray): Boolean

Verify an RSA-PSS (SHA-1) signature using a PKCS#1 DER public key.