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| 1 | +package org.bouncycastle.internal.asn1.misc; |
| 2 | + |
| 3 | +import org.bouncycastle.asn1.ASN1EncodableVector; |
| 4 | +import org.bouncycastle.asn1.ASN1Integer; |
| 5 | +import org.bouncycastle.asn1.ASN1Object; |
| 6 | +import org.bouncycastle.asn1.ASN1OctetString; |
| 7 | +import org.bouncycastle.asn1.ASN1Primitive; |
| 8 | +import org.bouncycastle.asn1.ASN1Sequence; |
| 9 | +import org.bouncycastle.asn1.DEROctetString; |
| 10 | +import org.bouncycastle.asn1.DERSequence; |
| 11 | +import org.bouncycastle.util.Arrays; |
| 12 | + |
| 13 | +public class CAST5CBCParameters |
| 14 | + extends ASN1Object |
| 15 | +{ |
| 16 | + ASN1Integer keyLength; |
| 17 | + ASN1OctetString iv; |
| 18 | + |
| 19 | + public static CAST5CBCParameters getInstance( |
| 20 | + Object o) |
| 21 | + { |
| 22 | + if (o instanceof CAST5CBCParameters) |
| 23 | + { |
| 24 | + return (CAST5CBCParameters)o; |
| 25 | + } |
| 26 | + else if (o != null) |
| 27 | + { |
| 28 | + return new CAST5CBCParameters(ASN1Sequence.getInstance(o)); |
| 29 | + } |
| 30 | + |
| 31 | + return null; |
| 32 | + } |
| 33 | + |
| 34 | + public CAST5CBCParameters( |
| 35 | + byte[] iv, |
| 36 | + int keyLength) |
| 37 | + { |
| 38 | + this.iv = new DEROctetString(Arrays.clone(iv)); |
| 39 | + this.keyLength = new ASN1Integer(keyLength); |
| 40 | + } |
| 41 | + |
| 42 | + private CAST5CBCParameters( |
| 43 | + ASN1Sequence seq) |
| 44 | + { |
| 45 | + iv = (ASN1OctetString)seq.getObjectAt(0); |
| 46 | + keyLength = (ASN1Integer)seq.getObjectAt(1); |
| 47 | + } |
| 48 | + |
| 49 | + public byte[] getIV() |
| 50 | + { |
| 51 | + return Arrays.clone(iv.getOctets()); |
| 52 | + } |
| 53 | + |
| 54 | + public int getKeyLength() |
| 55 | + { |
| 56 | + return keyLength.intValueExact(); |
| 57 | + } |
| 58 | + |
| 59 | + /** |
| 60 | + * Produce an object suitable for an ASN1OutputStream. |
| 61 | + * <pre> |
| 62 | + * cast5CBCParameters ::= SEQUENCE { |
| 63 | + * iv OCTET STRING DEFAULT 0, |
| 64 | + * -- Initialization vector |
| 65 | + * keyLength INTEGER |
| 66 | + * -- Key length, in bits |
| 67 | + * } |
| 68 | + * </pre> |
| 69 | + */ |
| 70 | + public ASN1Primitive toASN1Primitive() |
| 71 | + { |
| 72 | + ASN1EncodableVector v = new ASN1EncodableVector(2); |
| 73 | + |
| 74 | + v.add(iv); |
| 75 | + v.add(keyLength); |
| 76 | + |
| 77 | + return new DERSequence(v); |
| 78 | + } |
| 79 | +} |
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