用Kerberos为J2ME应用程序上锁，第3部分 - 建立与电子银行的安全通信（下） - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-06-15
| getGeneralStringBytes (clientName) ); byte[] name_string = getTagAndLengthBytes(ASN1DataTypes.CONTEXT_SPECIFIC, 1, generalStringSequence ); byte[] name_type = getTagAndLengthBytes(ASN1DataTypes.CONTEXT_SPECIFIC, 0, getIntegerBytes(ASN1DataTypes.NT_PRINCIPAL) ); byte[] clientNameSequence = getSequenceBytes( concatenateBytes (name_type, name_string) ); byte[] cName = getTagAndLengthBytes(ASN1DataTypes.CONTEXT_SPECIFIC, 2, clientNameSequence); byte[] cusec = getTagAndLengthBytes(ASN1DataTypes.CONTEXT_SPECIFIC, 4, getIntegerBytes(0) ); byte[] ctime = getTagAndLengthBytes(ASN1DataTypes.CONTEXT_SPECIFIC, 5, getGeneralizedTimeBytes ( getUTCTimeString(System.currentTimeMillis()).getBytes() ) ); if (sequenceNumber !=0 ) { byte[] etype = getTagAndLengthBytes ( ASN1DataTypes.CONTEXT_SPECIFIC, 0, getIntegerBytes(3) ); byte[] eKey = getTagAndLengthBytes ( ASN1DataTypes.CONTEXT_SPECIFIC, 1, getOctetStringBytes(encryptionKey) ); byte[] subKey_sequence = getSequenceBytes (concatenateBytes(etype, eKey)); byte[] subKey = getTagAndLengthBytes( ASN1DataTypes.CONTEXT_SPECIFIC, 6, subKey_sequence ); byte[] sequenceNumberBytes = { (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff }; sequenceNumberBytes[3] = (byte)sequenceNumber; byte[] seqNumber = getTagAndLengthBytes( ASN1DataTypes.CONTEXT_SPECIFIC, 7, getIntegerBytes(sequenceNumberBytes) ); authenticator = getTagAndLengthBytes(ASN1DataTypes.APPLICATION_TYPE, 2, getSequenceBytes( concatenateBytes(vno, concatenateBytes(realmName, concatenateBytes(cName, concatenateBytes(checksumBytes, concatenateBytes(cusec, concatenateBytes(ctime, concatenateBytes(subKey,seqNumber) ) |
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