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Added API doc for SecureHash. Removed signatureAlgorithmName val as it's not being used

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This commit is contained in:
Andrius Dagys 2016-09-22 16:52:06 +01:00
parent 8d84ece9c2
commit f1a2bed497
1 changed files with 5 additions and 4 deletions
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9
core/src/main/kotlin/com/r3corda/core/crypto/SecureHash.kt
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@ -4,13 +4,16 @@ import com.google.common.io.BaseEncoding
import com.r3corda.core.serialization.OpaqueBytes import com.r3corda.core.serialization.OpaqueBytes
import java.security.MessageDigest import java.security.MessageDigest
/**
* Container for a cryptographically secure hash value.
* Provides utilities for generating a cryptographic hash using different algorithms (currently only SHA-256 supported).
*/
sealed class SecureHash(bits: ByteArray) : OpaqueBytes(bits) { sealed class SecureHash(bits: ByteArray) : OpaqueBytes(bits) {
/** SHA-256 is part of the SHA-2 hash function family. Generated hash is fixed size, 256-bits (32-bytes) */
class SHA256(bits: ByteArray) : SecureHash(bits) { class SHA256(bits: ByteArray) : SecureHash(bits) {
init { init {
require(bits.size == 32) require(bits.size == 32)
} }
override val signatureAlgorithmName: String get() = "SHA256withECDSA"
} }
override fun toString() = BaseEncoding.base16().encode(bits) override fun toString() = BaseEncoding.base16().encode(bits)
@ -34,8 +37,6 @@ sealed class SecureHash(bits: ByteArray) : OpaqueBytes(bits) {
@JvmStatic fun randomSHA256() = sha256(newSecureRandom().generateSeed(32)) @JvmStatic fun randomSHA256() = sha256(newSecureRandom().generateSeed(32))
} }
abstract val signatureAlgorithmName: String
// In future, maybe SHA3, truncated hashes etc. // In future, maybe SHA3, truncated hashes etc.
} }