crypto: fix megacheck warnings (#14917)

* crypto: fix megacheck warnings

* crypto/ecies: remove ASN.1 support

1 files changed, 0 insertions, 93 deletions

diff --git a/crypto/ecies/params.go b/crypto/ecies/params.go
index 826d90c84..6312daf5a 100644
--- a/crypto/ecies/params.go
+++ b/crypto/ecies/params.go
@@ -114,97 +114,4 @@ func AddParamsForCurve(curve elliptic.Curve, params *ECIESParams) {
 // Only the curves P256, P384, and P512 are supported.
 func ParamsFromCurve(curve elliptic.Curve) (params *ECIESParams) {
 	return paramsFromCurve[curve]
-
-	/*
-		switch curve {
-		case elliptic.P256():
-			return ECIES_AES128_SHA256
-		case elliptic.P384():
-			return ECIES_AES256_SHA384
-		case elliptic.P521():
-			return ECIES_AES256_SHA512
-		default:
-			return nil
-		}
-	*/
-}
-
-// ASN.1 encode the ECIES parameters relevant to the encryption operations.
-func paramsToASNECIES(params *ECIESParams) (asnParams asnECIESParameters) {
-	if nil == params {
-		return
-	}
-	asnParams.KDF = asnNISTConcatenationKDF
-	asnParams.MAC = hmacFull
-	switch params.KeyLen {
-	case 16:
-		asnParams.Sym = aes128CTRinECIES
-	case 24:
-		asnParams.Sym = aes192CTRinECIES
-	case 32:
-		asnParams.Sym = aes256CTRinECIES
-	}
-	return
-}
-
-// ASN.1 encode the ECIES parameters relevant to ECDH.
-func paramsToASNECDH(params *ECIESParams) (algo asnECDHAlgorithm) {
-	switch params.hashAlgo {
-	case crypto.SHA224:
-		algo = dhSinglePass_stdDH_sha224kdf
-	case crypto.SHA256:
-		algo = dhSinglePass_stdDH_sha256kdf
-	case crypto.SHA384:
-		algo = dhSinglePass_stdDH_sha384kdf
-	case crypto.SHA512:
-		algo = dhSinglePass_stdDH_sha512kdf
-	}
-	return
-}
-
-// ASN.1 decode the ECIES parameters relevant to the encryption stage.
-func asnECIEStoParams(asnParams asnECIESParameters, params *ECIESParams) {
-	if !asnParams.KDF.Cmp(asnNISTConcatenationKDF) {
-		params = nil
-		return
-	} else if !asnParams.MAC.Cmp(hmacFull) {
-		params = nil
-		return
-	}
-
-	switch {
-	case asnParams.Sym.Cmp(aes128CTRinECIES):
-		params.KeyLen = 16
-		params.BlockSize = 16
-		params.Cipher = aes.NewCipher
-	case asnParams.Sym.Cmp(aes192CTRinECIES):
-		params.KeyLen = 24
-		params.BlockSize = 16
-		params.Cipher = aes.NewCipher
-	case asnParams.Sym.Cmp(aes256CTRinECIES):
-		params.KeyLen = 32
-		params.BlockSize = 16
-		params.Cipher = aes.NewCipher
-	default:
-		params = nil
-	}
-}
-
-// ASN.1 decode the ECIES parameters relevant to ECDH.
-func asnECDHtoParams(asnParams asnECDHAlgorithm, params *ECIESParams) {
-	if asnParams.Cmp(dhSinglePass_stdDH_sha224kdf) {
-		params.hashAlgo = crypto.SHA224
-		params.Hash = sha256.New224
-	} else if asnParams.Cmp(dhSinglePass_stdDH_sha256kdf) {
-		params.hashAlgo = crypto.SHA256
-		params.Hash = sha256.New
-	} else if asnParams.Cmp(dhSinglePass_stdDH_sha384kdf) {
-		params.hashAlgo = crypto.SHA384
-		params.Hash = sha512.New384
-	} else if asnParams.Cmp(dhSinglePass_stdDH_sha512kdf) {
-		params.hashAlgo = crypto.SHA512
-		params.Hash = sha512.New
-	} else {
-		params = nil
-	}
 }