AES256/SHA512...etc about korge HOT 6 CLOSED

HmacSHA512 would be very useful as well

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Also, alternative cipher block modes are essential to my project, such as IGE with a specified IV. I'm sorry I can't make a PR as I have no experience whatsoever in crypto, but I might donate :D

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There's SHA512 impl in commonModule, but idk if it works properly:

• korge/krypto/src/commonMain/kotlin/korlibs/crypto/SHA512.kt

  Line 66 in e0e9acf

  // @TODO: The super update doesn't work with SHA512, do we have to fix something?

Do you think it should be listed on website (https://docs.korge.org/krypto/#hash-md5sha1sha256), or is it still not safe to use? 🤔

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These tests are passing:

• korge/krypto/src/jvmTest/kotlin/korlibs/crypto/SHA512JvmTest.kt

  Line 8 in e0e9acf

  class SHA512JvmTest {

• korge/krypto/src/commonTest/kotlin/korlibs/crypto/SHA512Test.kt

  Line 7 in e0e9acf

  class SHA512Test {

I guess that comment refers to the need of doing the override. But the implementation seems to work.

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@soywiz Could you update to support HmacSHA512?

fun hmacSHA512(key: ByteArray, data: ByteArray): Hash = hmac(key, data, SHA512())

In the code I see that you are using it in pbkdf2:

fun pbkdf2WithHmacSHA512(password: ByteArray, salt: ByteArray, iterationCount: Int, keySizeInBits: Int): Hash =
            pbkdf2(password, salt, iterationCount, keySizeInBits, SHA512())
...
u = HMAC.hmac(password, u, hasher).bytes // hasher is SHA512()

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I'm going to close this issue. The reason is that this is issue not S.M.A.R.T and covers too many cases. Feel free to open one per use-case.
@iTanChi feel free to open an issue for HMAC SHA512.

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