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SNOW-1431870 Add cloud integration for GCM encryption
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src/main/java/net/snowflake/client/jdbc/cloud/storage/DecryptionHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| package net.snowflake.client.jdbc.cloud.storage; | ||
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|
||
| import com.google.common.base.Strings; | ||
| import java.io.File; | ||
| import java.io.InputStream; | ||
| import java.security.InvalidAlgorithmParameterException; | ||
| import java.security.InvalidKeyException; | ||
| import java.security.NoSuchAlgorithmException; | ||
| import javax.crypto.BadPaddingException; | ||
| import javax.crypto.IllegalBlockSizeException; | ||
| import javax.crypto.NoSuchPaddingException; | ||
| import net.snowflake.client.core.SFBaseSession; | ||
| import net.snowflake.client.jdbc.ErrorCode; | ||
| import net.snowflake.client.jdbc.SnowflakeSQLLoggedException; | ||
| import net.snowflake.client.log.SFLogger; | ||
| import net.snowflake.client.log.SFLoggerFactory; | ||
| import net.snowflake.common.core.RemoteStoreFileEncryptionMaterial; | ||
| import net.snowflake.common.core.SqlState; | ||
|
|
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| class DecryptionHelper { | ||
| private static final SFLogger logger = SFLoggerFactory.getLogger(SnowflakeGCSClient.class); | ||
|
|
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| private final String queryId; | ||
| private final SFBaseSession session; | ||
| private final String key; | ||
| private final String keyIv; | ||
| private final String dataIv; | ||
| private final String keyAad; | ||
| private final String dataAad; | ||
| private final StageInfo.Ciphers ciphers; | ||
|
|
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| private DecryptionHelper( | ||
| String queryId, | ||
| SFBaseSession session, | ||
| String key, | ||
| String keyIv, | ||
| String dataIv, | ||
| String keyAad, | ||
| String dataAad, | ||
| StageInfo.Ciphers ciphers) { | ||
| this.queryId = queryId; | ||
| this.session = session; | ||
| this.key = key; | ||
| this.keyIv = keyIv; | ||
| this.dataIv = dataIv; | ||
| this.keyAad = keyAad; | ||
| this.dataAad = dataAad; | ||
| this.ciphers = ciphers; | ||
| } | ||
|
|
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| static DecryptionHelper forCbc( | ||
| String queryId, SFBaseSession session, String key, String contentIv) | ||
| throws SnowflakeSQLLoggedException { | ||
| if (Strings.isNullOrEmpty(key) || Strings.isNullOrEmpty(contentIv)) { | ||
| throw exception(queryId, session); | ||
| } | ||
| return new DecryptionHelper( | ||
| queryId, session, key, null, contentIv, null, null, StageInfo.Ciphers.AESECB_AESCBC); | ||
| } | ||
|
|
||
| static DecryptionHelper forGcm( | ||
| String queryId, | ||
| SFBaseSession session, | ||
| String key, | ||
| String keyIv, | ||
| String dataIv, | ||
| String keyAad, | ||
| String dataAad) | ||
| throws SnowflakeSQLLoggedException { | ||
| if (Strings.isNullOrEmpty(key) | ||
| || Strings.isNullOrEmpty(keyIv) | ||
| || Strings.isNullOrEmpty(dataIv) | ||
| || keyAad == null | ||
| || dataAad == null) { | ||
| throw exception(queryId, session); | ||
| } | ||
| return new DecryptionHelper( | ||
| queryId, session, key, keyIv, dataIv, keyAad, dataAad, StageInfo.Ciphers.AESGCM_AESGCM); | ||
| } | ||
|
|
||
| void validate() throws SnowflakeSQLLoggedException { | ||
| if (key == null | ||
| || dataIv == null | ||
| || (ciphers == StageInfo.Ciphers.AESGCM_AESGCM && keyIv == null)) { | ||
| throw new SnowflakeSQLLoggedException( | ||
| queryId, | ||
| session, | ||
| ErrorCode.INTERNAL_ERROR.getMessageCode(), | ||
| SqlState.INTERNAL_ERROR, | ||
| "File metadata incomplete"); | ||
| } | ||
| } | ||
|
|
||
| void decryptFile(File file, RemoteStoreFileEncryptionMaterial encMat) | ||
| throws SnowflakeSQLLoggedException { | ||
| try { | ||
| switch (ciphers) { | ||
| case AESECB_AESCBC: | ||
| EncryptionProvider.decrypt(file, key, dataIv, encMat); | ||
| case AESGCM_AESGCM: | ||
| GcmEncryptionProvider.decryptFile(file, key, dataIv, keyIv, encMat, dataAad, keyAad); | ||
| default: | ||
| throw new IllegalArgumentException("unsuported ciphers: " + ciphers); | ||
| } | ||
| } catch (Exception ex) { | ||
| logger.error("Error decrypting file", ex); | ||
| throw new SnowflakeSQLLoggedException( | ||
| queryId, | ||
| session, | ||
| ErrorCode.INTERNAL_ERROR.getMessageCode(), | ||
| SqlState.INTERNAL_ERROR, | ||
| "Cannot decrypt file"); | ||
| } | ||
| } | ||
|
|
||
| InputStream decryptStream(InputStream inputStream, RemoteStoreFileEncryptionMaterial encMat) | ||
| throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, | ||
| BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException { | ||
| switch (ciphers) { | ||
| case AESGCM_AESGCM: | ||
| return GcmEncryptionProvider.decryptStream( | ||
| inputStream, key, dataIv, keyIv, encMat, dataAad, keyAad); | ||
| case AESECB_AESCBC: | ||
| return EncryptionProvider.decryptStream(inputStream, key, dataIv, encMat); | ||
| } | ||
| throw new IllegalArgumentException("unsupported ciphers: " + ciphers); | ||
| } | ||
|
|
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| private static SnowflakeSQLLoggedException exception(String queryId, SFBaseSession session) { | ||
| return new SnowflakeSQLLoggedException( | ||
| queryId, | ||
| session, | ||
| ErrorCode.INTERNAL_ERROR.getMessageCode(), | ||
| SqlState.INTERNAL_ERROR, | ||
| "File metadata incomplete"); | ||
| } | ||
| } |
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