java/KinesisAggregator/src/main/java/com/amazonaws/kinesis/agg/AggRecord.java [484:500]:
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	private String createExplicitHashKey(final String partitionKey) {
		BigInteger hashKey = BigInteger.ZERO;

		this.md5.reset();
		byte[] pkDigest = this.md5.digest(partitionKey.getBytes(StandardCharsets.UTF_8));

		for (int i = 0; i < this.md5.getDigestLength(); i++) {
			BigInteger p = new BigInteger(String.valueOf((int) pkDigest[i] & 0xFF)); // convert
																						// to
																						// unsigned
																						// integer
			BigInteger shifted = p.shiftLeft((16 - i - 1) * 8);
			hashKey = hashKey.add(shifted);
		}

		return hashKey.toString(10);
	}
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java/KinesisAggregatorV2/src/main/java/com/amazonaws/kinesis/agg/AggRecord.java [478:494]:
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	protected String createExplicitHashKey(final String partitionKey) {
		BigInteger hashKey = BigInteger.ZERO;

		this.md5.reset();
		byte[] pkDigest = this.md5.digest(partitionKey.getBytes(StandardCharsets.UTF_8));

		for (int i = 0; i < this.md5.getDigestLength(); i++) {
			BigInteger p = new BigInteger(String.valueOf((int) pkDigest[i] & 0xFF)); // convert
																						// to
																						// unsigned
																						// integer
			BigInteger shifted = p.shiftLeft((16 - i - 1) * 8);
			hashKey = hashKey.add(shifted);
		}

		return hashKey.toString(10);
	}
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