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-rw-r--r--src/include/taler_crypto_lib.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index 5e7ea6059..ca80c6cca 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -604,6 +604,19 @@ struct TALER_RefreshCommitmentP
/**
+ * Symmetric key we use to encrypt KYC attributes
+ * in our database.
+ */
+struct TALER_AttributeEncryptionKeyP
+{
+ /**
+ * The key is a hash code.
+ */
+ struct GNUNET_HashCode hash;
+};
+
+
+/**
* Token used for access control to the merchant's unclaimed
* orders.
*/
@@ -1792,6 +1805,37 @@ TALER_denom_pub_verify (const struct TALER_DenominationPublicKey *denom_pub,
/**
+ * Encrypts KYC attributes for storage in the database.
+ *
+ * @param key encryption key to use
+ * @param attr set of attributes to encrypt
+ * @param[out] enc_attr encrypted attribute data
+ * @param[out] enc_attr_size number of bytes in @a enc_attr
+ */
+void
+TALER_CRYPTO_kyc_attributes_encrypt (
+ const struct TALER_AttributeEncryptionKeyP *key,
+ const json_t *attr,
+ void **enc_attr,
+ size_t *enc_attr_size);
+
+
+/**
+ * Encrypts KYC attributes for storage in the database.
+ *
+ * @param key encryption key to use
+ * @param enc_attr encrypted attribute data
+ * @param enc_attr_size number of bytes in @a enc_attr
+ * @return set of decrypted attributes, NULL on failure
+ */
+json_t *
+TALER_CRYPTO_kyc_attributes_decrypt (
+ const struct TALER_AttributeEncryptionKeyP *key,
+ const void *enc_attr,
+ size_t enc_attr_size);
+
+
+/**
* Check if a coin is valid; that is, whether the denomination key exists,
* is not expired, and the signature is correct.
*