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public static PGPPublicKey readPublicKey(InputStream input) throws IOException, PGPException {
PGPPublicKeyRingCollection pgpPub = new PGPPublicKeyRingCollection(
PGPUtil.getDecoderStream(input));
Iterator keyRingIter = pgpPub.getKeyRings();
while (keyRingIter.hasNext()) {
PGPPublicKeyRing keyRing = (PGPPublicKeyRing) keyRingIter.next();
Iterator keyIter = keyRing.getPublicKeys();
while (keyIter.hasNext()) {
PGPPublicKey key = (PGPPublicKey) keyIter.next();
if (key.isEncryptionKey()) {
return key;
}
}
}
throw new IllegalArgumentException(
"Can't find encryption key in key ring.");
}
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