diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
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committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java b/core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java new file mode 100644 index 00000000..2943c0b6 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/x509/KeyUsage.java @@ -0,0 +1,102 @@ +package org.bouncycastle.asn1.x509; + +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.DERBitString; + +/** + * The KeyUsage object. + * <pre> + * id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 } + * + * KeyUsage ::= BIT STRING { + * digitalSignature (0), + * nonRepudiation (1), + * keyEncipherment (2), + * dataEncipherment (3), + * keyAgreement (4), + * keyCertSign (5), + * cRLSign (6), + * encipherOnly (7), + * decipherOnly (8) } + * </pre> + */ +public class KeyUsage + extends ASN1Object +{ + public static final int digitalSignature = (1 << 7); + public static final int nonRepudiation = (1 << 6); + public static final int keyEncipherment = (1 << 5); + public static final int dataEncipherment = (1 << 4); + public static final int keyAgreement = (1 << 3); + public static final int keyCertSign = (1 << 2); + public static final int cRLSign = (1 << 1); + public static final int encipherOnly = (1 << 0); + public static final int decipherOnly = (1 << 15); + + private DERBitString bitString; + + public static KeyUsage getInstance(Object obj) // needs to be DERBitString for other VMs + { + if (obj instanceof KeyUsage) + { + return (KeyUsage)obj; + } + else if (obj != null) + { + return new KeyUsage(DERBitString.getInstance(obj)); + } + + return null; + } + + public static KeyUsage fromExtensions(Extensions extensions) + { + return KeyUsage.getInstance(extensions.getExtensionParsedValue(Extension.keyUsage)); + } + + /** + * Basic constructor. + * + * @param usage - the bitwise OR of the Key Usage flags giving the + * allowed uses for the key. + * e.g. (KeyUsage.keyEncipherment | KeyUsage.dataEncipherment) + */ + public KeyUsage( + int usage) + { + this.bitString = new DERBitString(usage); + } + + private KeyUsage( + DERBitString bitString) + { + this.bitString = bitString; + } + + public byte[] getBytes() + { + return bitString.getBytes(); + } + + public int getPadBits() + { + return bitString.getPadBits(); + } + + public String toString() + { + byte[] data = bitString.getBytes(); + + if (data.length == 1) + { + return "KeyUsage: 0x" + Integer.toHexString(data[0] & 0xff); + } + return "KeyUsage: 0x" + Integer.toHexString((data[1] & 0xff) << 8 | (data[0] & 0xff)); + } + + public ASN1Primitive toASN1Primitive() + { + return bitString; + } +} |