diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/pkcs/PBKDF2Params.java')
| -rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/pkcs/PBKDF2Params.java | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/pkcs/PBKDF2Params.java b/core/src/main/java/org/bouncycastle/asn1/pkcs/PBKDF2Params.java deleted file mode 100644 index 92c4e8f1..00000000 --- a/core/src/main/java/org/bouncycastle/asn1/pkcs/PBKDF2Params.java +++ /dev/null @@ -1,248 +0,0 @@ -package org.bouncycastle.asn1.pkcs; - -import java.math.BigInteger; -import java.util.Enumeration; - -import org.bouncycastle.asn1.ASN1EncodableVector; -import org.bouncycastle.asn1.ASN1Integer; -import org.bouncycastle.asn1.ASN1Object; -import org.bouncycastle.asn1.ASN1OctetString; -import org.bouncycastle.asn1.ASN1Primitive; -import org.bouncycastle.asn1.ASN1Sequence; -import org.bouncycastle.asn1.DERNull; -import org.bouncycastle.asn1.DEROctetString; -import org.bouncycastle.asn1.DERSequence; -import org.bouncycastle.asn1.x509.AlgorithmIdentifier; - -/** - * <pre> - * PBKDF2-params ::= SEQUENCE { - * salt CHOICE { - * specified OCTET STRING, - * otherSource AlgorithmIdentifier {{PBKDF2-SaltSources}} - * }, - * iterationCount INTEGER (1..MAX), - * keyLength INTEGER (1..MAX) OPTIONAL, - * prf AlgorithmIdentifier {{PBKDF2-PRFs}} DEFAULT algid-hmacWithSHA1 } - * </pre> - */ -public class PBKDF2Params - extends ASN1Object -{ - private static final AlgorithmIdentifier algid_hmacWithSHA1 = new AlgorithmIdentifier(PKCSObjectIdentifiers.id_hmacWithSHA1, DERNull.INSTANCE); - - private ASN1OctetString octStr; - private ASN1Integer iterationCount; - private ASN1Integer keyLength; - private AlgorithmIdentifier prf; - - /** - * Create PBKDF2Params from the passed in object, - * - * @param obj either PBKDF2Params or an ASN2Sequence. - * @return a PBKDF2Params instance. - */ - public static PBKDF2Params getInstance( - Object obj) - { - if (obj instanceof PBKDF2Params) - { - return (PBKDF2Params)obj; - } - - if (obj != null) - { - return new PBKDF2Params(ASN1Sequence.getInstance(obj)); - } - - return null; - } - - /** - * Create a PBKDF2Params with the specified salt, iteration count, and algid-hmacWithSHA1 for the prf. - * - * @param salt input salt. - * @param iterationCount input iteration count. - */ - public PBKDF2Params( - byte[] salt, - int iterationCount) - { - this.octStr = new DEROctetString(salt); - this.iterationCount = new ASN1Integer(iterationCount); - } - - /** - * Create a PBKDF2Params with the specified salt, iteration count, keyLength, and algid-hmacWithSHA1 for the prf. - * - * @param salt input salt. - * @param iterationCount input iteration count. - * @param keyLength intended key length to be produced. - */ - public PBKDF2Params( - byte[] salt, - int iterationCount, - int keyLength) - { - this(salt, iterationCount); - - this.keyLength = new ASN1Integer(keyLength); - } - - /** - * Create a PBKDF2Params with the specified salt, iteration count, keyLength, and a defined prf. - * - * @param salt input salt. - * @param iterationCount input iteration count. - * @param keyLength intended key length to be produced. - * @param prf the pseudo-random function to use. - */ - public PBKDF2Params( - byte[] salt, - int iterationCount, - int keyLength, - AlgorithmIdentifier prf) - { - this(salt, iterationCount); - - this.keyLength = new ASN1Integer(keyLength); - this.prf = prf; - } - - /** - * Create a PBKDF2Params with the specified salt, iteration count, and a defined prf. - * - * @param salt input salt. - * @param iterationCount input iteration count. - * @param prf the pseudo-random function to use. - */ - public PBKDF2Params( - byte[] salt, - int iterationCount, - AlgorithmIdentifier prf) - { - this(salt, iterationCount); - this.prf = prf; - } - - private PBKDF2Params( - ASN1Sequence seq) - { - Enumeration e = seq.getObjects(); - - octStr = (ASN1OctetString)e.nextElement(); - iterationCount = (ASN1Integer)e.nextElement(); - - if (e.hasMoreElements()) - { - Object o = e.nextElement(); - - if (o instanceof ASN1Integer) - { - keyLength = ASN1Integer.getInstance(o); - if (e.hasMoreElements()) - { - o = e.nextElement(); - } - else - { - o = null; - } - } - else - { - keyLength = null; - } - - if (o != null) - { - prf = AlgorithmIdentifier.getInstance(o); - } - } - } - - /** - * Return the salt to use. - * - * @return the input salt. - */ - public byte[] getSalt() - { - return octStr.getOctets(); - } - - /** - * Return the iteration count to use. - * - * @return the input iteration count. - */ - public BigInteger getIterationCount() - { - return iterationCount.getValue(); - } - - /** - * Return the intended length in octets of the derived key. - * - * @return length in octets for derived key, if specified. - */ - public BigInteger getKeyLength() - { - if (keyLength != null) - { - return keyLength.getValue(); - } - - return null; - } - - /** - * Return true if the PRF is the default (hmacWithSHA1) - * - * @return true if PRF is default, false otherwise. - */ - public boolean isDefaultPrf() - { - return prf == null || prf.equals(algid_hmacWithSHA1); - } - - /** - * Return the algId of the underlying pseudo random function to use. - * - * @return the prf algorithm identifier. - */ - public AlgorithmIdentifier getPrf() - { - if (prf != null) - { - return prf; - } - - return algid_hmacWithSHA1; - } - - /** - * Return an ASN.1 structure suitable for encoding. - * - * @return the object as an ASN.1 encodable structure. - */ - public ASN1Primitive toASN1Primitive() - { - ASN1EncodableVector v = new ASN1EncodableVector(); - - v.add(octStr); - v.add(iterationCount); - - if (keyLength != null) - { - v.add(keyLength); - } - - if (prf != null && !prf.equals(algid_hmacWithSHA1)) - { - v.add(prf); - } - - return new DERSequence(v); - } -} |