diff options
Diffstat (limited to 'bitmask_android/src/main/java/org/spongycastle/util/io/pem')
5 files changed, 299 insertions, 0 deletions
diff --git a/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemGenerationException.java b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemGenerationException.java new file mode 100644 index 00000000..0127ca0c --- /dev/null +++ b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemGenerationException.java @@ -0,0 +1,26 @@ +package org.spongycastle.util.io.pem; + +import java.io.IOException; + +@SuppressWarnings("serial") +public class PemGenerationException + extends IOException +{ + private Throwable cause; + + public PemGenerationException(String message, Throwable cause) + { + super(message); + this.cause = cause; + } + + public PemGenerationException(String message) + { + super(message); + } + + public Throwable getCause() + { + return cause; + } +} diff --git a/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemHeader.java b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemHeader.java new file mode 100644 index 00000000..4adb815e --- /dev/null +++ b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemHeader.java @@ -0,0 +1,66 @@ +package org.spongycastle.util.io.pem; + +public class PemHeader +{ + private String name; + private String value; + + public PemHeader(String name, String value) + { + this.name = name; + this.value = value; + } + + public String getName() + { + return name; + } + + public String getValue() + { + return value; + } + + public int hashCode() + { + return getHashCode(this.name) + 31 * getHashCode(this.value); + } + + public boolean equals(Object o) + { + if (!(o instanceof PemHeader)) + { + return false; + } + + PemHeader other = (PemHeader)o; + + return other == this || (isEqual(this.name, other.name) && isEqual(this.value, other.value)); + } + + private int getHashCode(String s) + { + if (s == null) + { + return 1; + } + + return s.hashCode(); + } + + private boolean isEqual(String s1, String s2) + { + if (s1 == s2) + { + return true; + } + + if (s1 == null || s2 == null) + { + return false; + } + + return s1.equals(s2); + } + +} diff --git a/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObject.java b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObject.java new file mode 100644 index 00000000..6f7c79c5 --- /dev/null +++ b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObject.java @@ -0,0 +1,62 @@ +package org.spongycastle.util.io.pem; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +@SuppressWarnings("all") +public class PemObject + implements PemObjectGenerator +{ + private static final List EMPTY_LIST = Collections.unmodifiableList(new ArrayList()); + + private String type; + private List headers; + private byte[] content; + + /** + * Generic constructor for object without headers. + * + * @param type pem object type. + * @param content the binary content of the object. + */ + public PemObject(String type, byte[] content) + { + this(type, EMPTY_LIST, content); + } + + /** + * Generic constructor for object with headers. + * + * @param type pem object type. + * @param headers a list of PemHeader objects. + * @param content the binary content of the object. + */ + public PemObject(String type, List headers, byte[] content) + { + this.type = type; + this.headers = Collections.unmodifiableList(headers); + this.content = content; + } + + public String getType() + { + return type; + } + + public List getHeaders() + { + return headers; + } + + public byte[] getContent() + { + return content; + } + + public PemObject generate() + throws PemGenerationException + { + return this; + } +} diff --git a/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObjectGenerator.java b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObjectGenerator.java new file mode 100644 index 00000000..1a8cea6d --- /dev/null +++ b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemObjectGenerator.java @@ -0,0 +1,7 @@ +package org.spongycastle.util.io.pem; + +public interface PemObjectGenerator +{ + PemObject generate() + throws PemGenerationException; +} diff --git a/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemWriter.java b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemWriter.java new file mode 100644 index 00000000..f5a6a363 --- /dev/null +++ b/bitmask_android/src/main/java/org/spongycastle/util/io/pem/PemWriter.java @@ -0,0 +1,138 @@ +package org.spongycastle.util.io.pem; + +import java.io.BufferedWriter; +import java.io.IOException; +import java.io.Writer; +import java.util.Iterator; + +import org.spongycastle.util.encoders.Base64; + +/** + * A generic PEM writer, based on RFC 1421 + */ +@SuppressWarnings("all") +public class PemWriter + extends BufferedWriter +{ + private static final int LINE_LENGTH = 64; + + private final int nlLength; + private char[] buf = new char[LINE_LENGTH]; + + /** + * Base constructor. + * + * @param out output stream to use. + */ + public PemWriter(Writer out) + { + super(out); + + String nl = System.getProperty("line.separator"); + if (nl != null) + { + nlLength = nl.length(); + } + else + { + nlLength = 2; + } + } + + /** + * Return the number of bytes or characters required to contain the + * passed in object if it is PEM encoded. + * + * @param obj pem object to be output + * @return an estimate of the number of bytes + */ + public int getOutputSize(PemObject obj) + { + // BEGIN and END boundaries. + int size = (2 * (obj.getType().length() + 10 + nlLength)) + 6 + 4; + + if (!obj.getHeaders().isEmpty()) + { + for (Iterator it = obj.getHeaders().iterator(); it.hasNext();) + { + PemHeader hdr = (PemHeader)it.next(); + + size += hdr.getName().length() + ": ".length() + hdr.getValue().length() + nlLength; + } + + size += nlLength; + } + + // base64 encoding + int dataLen = ((obj.getContent().length + 2) / 3) * 4; + + size += dataLen + (((dataLen + LINE_LENGTH - 1) / LINE_LENGTH) * nlLength); + + return size; + } + + public void writeObject(PemObjectGenerator objGen) + throws IOException + { + PemObject obj = objGen.generate(); + + writePreEncapsulationBoundary(obj.getType()); + + if (!obj.getHeaders().isEmpty()) + { + for (Iterator it = obj.getHeaders().iterator(); it.hasNext();) + { + PemHeader hdr = (PemHeader)it.next(); + + this.write(hdr.getName()); + this.write(": "); + this.write(hdr.getValue()); + this.newLine(); + } + + this.newLine(); + } + + writeEncoded(obj.getContent()); + writePostEncapsulationBoundary(obj.getType()); + } + + private void writeEncoded(byte[] bytes) + throws IOException + { + bytes = Base64.encode(bytes); + + for (int i = 0; i < bytes.length; i += buf.length) + { + int index = 0; + + while (index != buf.length) + { + if ((i + index) >= bytes.length) + { + break; + } + buf[index] = (char)bytes[i + index]; + index++; + } + this.write(buf, 0, index); + this.newLine(); + } + } + + private void writePreEncapsulationBoundary( + String type) + throws IOException + { + this.write("-----BEGIN " + type + "-----"); + this.newLine(); + } + + private void writePostEncapsulationBoundary( + String type) + throws IOException + { + this.write("-----END " + type + "-----"); + this.newLine(); + } +} |