Package net.i2p.crypto
Class SigUtil
java.lang.Object
net.i2p.crypto.SigUtil
Utilities for Signing keys and Signatures
- Since:
- 0.9.9, public since 0.9.12
-
Method Summary
Modifier and TypeMethodDescriptionstatic NativeBigInteger[]
aSN1ToBigInteger
(byte[] asn, int len) See above.static void
(package private) static byte[]
combine
(BigInteger x, BigInteger y, int len) Combine two BigIntegers of nominal length = len / 2static SigningPrivateKey
static SigningPublicKey
static SigningPrivateKey
fromJavaKey
(ECPrivateKey pk, SigType type) static SigningPublicKey
fromJavaKey
(ECPublicKey pk, SigType type) static SigningPrivateKey
fromJavaKey
(RSAPrivateKey pk, SigType type) As of 0.9.31, if pk is a RSAPrivateCrtKey, this will return a RSASigningPrivateCrtKey.static SigningPublicKey
fromJavaKey
(RSAPublicKey pk, SigType type) static SigningPrivateKey
Use if SigType is unknown.static SigningPrivateKey
fromJavaKey
(PrivateKey pk, SigType type) Use if SigType is known.static SigningPublicKey
fromJavaKey
(PublicKey pk) Use if SigType is unknown.static SigningPublicKey
fromJavaKey
(PublicKey pk, SigType type) Use if SigType is known.static SigningPrivateKey
fromJavaKey
(EdDSAPrivateKey pk, SigType type) static SigningPublicKey
fromJavaKey
(EdDSAPublicKey pk, SigType type) static Signature
fromJavaSig
(byte[] asn, SigType type) static PrivateKey
importJavaPrivateKey
(File file, SigType type) static PublicKey
importJavaPublicKey
(File file, SigType type) static int
intToASN1
(byte[] d, int idx, int val) Output an length or integer value in ASN.1 Does NOT output the tag e.g.static byte[]
rectify
(BigInteger bi, int len) static byte[]
http://download.oracle.com/javase/1.5.0/docs/guide/security/CryptoSpec.htmlstatic DSAPrivateKey
static DSAPublicKey
static ECPrivateKey
static ECPublicKey
static EdDSAPrivateKey
static EdDSAPublicKey
static PrivateKey
static PublicKey
static RSAPrivateKey
As of 0.9.31, if pk is a RSASigningPrivateCrtKey, this will return a RSAPrivateCrtKey.static RSAPublicKey
Deprecated.unusedstatic byte[]
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Method Details
-
toJavaKey
- Returns:
- JAVA key!
- Throws:
GeneralSecurityException
-
toJavaKey
- Returns:
- JAVA key!
- Throws:
GeneralSecurityException
-
fromJavaKey
Use if SigType is unknown. For efficiency, use fromJavakey(pk, type) if type is known.- Parameters:
pk
- JAVA key!- Throws:
InvalidKeyException
- on unknown typeGeneralSecurityException
- Since:
- 0.9.18
-
fromJavaKey
public static SigningPublicKey fromJavaKey(PublicKey pk, SigType type) throws GeneralSecurityException Use if SigType is known.- Parameters:
pk
- JAVA key!- Throws:
GeneralSecurityException
-
fromJavaKey
Use if SigType is unknown. For efficiency, use fromJavakey(pk, type) if type is known.- Parameters:
pk
- JAVA key!- Throws:
InvalidKeyException
- on unknown typeGeneralSecurityException
- Since:
- 0.9.18
-
fromJavaKey
public static SigningPrivateKey fromJavaKey(PrivateKey pk, SigType type) throws GeneralSecurityException Use if SigType is known.- Parameters:
pk
- JAVA key!- Throws:
GeneralSecurityException
-
toJavaECKey
- Returns:
- JAVA key!
- Throws:
GeneralSecurityException
-
toJavaECKey
- Returns:
- JAVA key!
- Throws:
GeneralSecurityException
-
fromJavaKey
public static SigningPublicKey fromJavaKey(ECPublicKey pk, SigType type) throws GeneralSecurityException - Throws:
GeneralSecurityException
-
fromJavaKey
public static SigningPrivateKey fromJavaKey(ECPrivateKey pk, SigType type) throws GeneralSecurityException - Throws:
GeneralSecurityException
-
toJavaEdDSAKey
- Returns:
- JAVA EdDSA public key!
- Throws:
GeneralSecurityException
- Since:
- 0.9.15
-
toJavaEdDSAKey
- Returns:
- JAVA EdDSA private key!
- Throws:
GeneralSecurityException
- Since:
- 0.9.15
-
fromJavaKey
public static SigningPublicKey fromJavaKey(EdDSAPublicKey pk, SigType type) throws GeneralSecurityException - Throws:
GeneralSecurityException
- Since:
- 0.9.15
-
fromJavaKey
public static SigningPrivateKey fromJavaKey(EdDSAPrivateKey pk, SigType type) throws GeneralSecurityException - Throws:
GeneralSecurityException
- Since:
- 0.9.15
-
toJavaDSAKey
- Throws:
GeneralSecurityException
-
toJavaDSAKey
- Throws:
GeneralSecurityException
-
fromJavaKey
- Throws:
GeneralSecurityException
-
fromJavaKey
- Throws:
GeneralSecurityException
-
toJavaRSAKey
@Deprecated public static RSAPublicKey toJavaRSAKey(SigningPublicKey pk) throws GeneralSecurityException Deprecated.unused- Throws:
GeneralSecurityException
-
toJavaRSAKey
As of 0.9.31, if pk is a RSASigningPrivateCrtKey, this will return a RSAPrivateCrtKey.- Throws:
GeneralSecurityException
-
fromJavaKey
public static SigningPublicKey fromJavaKey(RSAPublicKey pk, SigType type) throws GeneralSecurityException - Throws:
GeneralSecurityException
-
fromJavaKey
public static SigningPrivateKey fromJavaKey(RSAPrivateKey pk, SigType type) throws GeneralSecurityException As of 0.9.31, if pk is a RSAPrivateCrtKey, this will return a RSASigningPrivateCrtKey.- Throws:
GeneralSecurityException
-
toJavaSig
- Returns:
- ASN.1 representation
-
fromJavaSig
- Parameters:
asn
- ASN.1 representation- Returns:
- a Signature with SigType type
- Throws:
SignatureException
-
importJavaPublicKey
public static PublicKey importJavaPublicKey(File file, SigType type) throws GeneralSecurityException, IOException - Returns:
- JAVA key!
- Throws:
GeneralSecurityException
IOException
-
importJavaPrivateKey
public static PrivateKey importJavaPrivateKey(File file, SigType type) throws GeneralSecurityException, IOException - Returns:
- JAVA key!
- Throws:
GeneralSecurityException
IOException
-
combine
Combine two BigIntegers of nominal length = len / 2- Returns:
- array of exactly len bytes
- Throws:
InvalidKeyException
- Since:
- 0.9.9, package private since 0.9.31
-
rectify
- Parameters:
bi
- non-negative- Returns:
- array of exactly len bytes
- Throws:
InvalidKeyException
-
sigBytesToASN1
http://download.oracle.com/javase/1.5.0/docs/guide/security/CryptoSpec.htmlSignature Format: ASN.1 sequence of two INTEGER values: r and s, in that order: SEQUENCE ::= { r INTEGER, s INTEGER } http://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One 30 -- tag indicating SEQUENCE xx - length in octets 02 -- tag indicating INTEGER xx - length in octets xxxxxx - value
r and s are always non-negative. Only supports sigs up to about 65530 bytes. See code to fix BER encoding for this before you add a SigType with bigger signatures.- Throws:
IllegalArgumentException
- if too big- Since:
- 0.9.25, split out from sigBytesToASN1(byte[])
-
intToASN1
public static int intToASN1(byte[] d, int idx, int val) Output an length or integer value in ASN.1 Does NOT output the tag e.g. 0x02 / 0x30- Parameters:
val
- 0-65535- Returns:
- the new index
- Since:
- 0.9.25
-
aSN1ToBigInteger
See above. Only supports sigs up to about 65530 bytes. See code to fix BER encoding for bigger than that.- Parameters:
len
- nominal length of each BigInteger- Returns:
- two BigIntegers
- Throws:
SignatureException
- Since:
- 0.9.25
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clearCaches
public static void clearCaches()
-