diff --git a/doc/sql.extensions/README.builtin_functions.txt b/doc/sql.extensions/README.builtin_functions.txt
index 4e69d59184..fda9b7ae49 100644
--- a/doc/sql.extensions/README.builtin_functions.txt
+++ b/doc/sql.extensions/README.builtin_functions.txt
@@ -1101,15 +1101,15 @@ Example:
         key rdb$get_context('USER_SESSION', 'private_key')) from rdb$database;
 
 
---------
-RSA_SIGN
---------
+-------------
+RSA_SIGN_HASH
+-------------
 
 Function:
     Performs PSS encoding of message digest to be signed and signs using RSA private key.
 
 Format:
-    RSA_SIGN ( <string> KEY <private key> [HASH <hash>] [SALT_LENGTH <smallint>] )
+    RSA_SIGN_HASH ( <string> KEY <private key> [HASH <hash>] [SALT_LENGTH <smallint>] )
         KEY should be a value, returhed by RSA_PRIVATE function.
         hash ::= { MD5 | SHA1 | SHA256 | SHA512 } Default is SHA256.
         SALT_LENGTH indicates the length of the desired salt, and should typically be small.
@@ -1117,20 +1117,20 @@ Format:
 
 Example:
     (tip - start running samples one by one from RSA_PRIVATE function)
-    select rdb$set_context('USER_SESSION', 'msg', rsa_sign(hash('Test message' using sha256)
+    select rdb$set_context('USER_SESSION', 'msg', rsa_sign_hash(crypt_hash('Test message' using sha256)
         key rdb$get_context('USER_SESSION', 'private_key'))) from rdb$database;
 
 
-----------
-RSA_VERIFY
-----------
+---------------
+RSA_VERIFY_HASH
+---------------
 
 Function:
     Performs PSS encoding of message digest to be signed and verifies it's digital signature
         using RSA public key.
 
 Format:
-    RSA_VERIFY ( <string> SIGNATURE <string> KEY <public key> [HASH <hash>] [SALT_LENGTH <smallint>] )
+    RSA_VERIFY_HASH ( <string> SIGNATURE <string> KEY <public key> [HASH <hash>] [SALT_LENGTH <smallint>] )
         SIGNATURE should be a value, returhed by RSA_SIGN function.
         KEY should be a value, returhed by RSA_PUBLIC function.
         hash ::= { MD5 | SHA1 | SHA256 | SHA512 } Default is SHA256.
@@ -1139,7 +1139,7 @@ Format:
 
 Example:
     (tip - start running samples one by one from RSA_PRIVATE function)
-    select rsa_verify(hash('Test message' using sha256) signature rdb$get_context('USER_SESSION', 'msg')
+    select rsa_verify_hash(crypt_hash('Test message' using sha256) signature rdb$get_context('USER_SESSION', 'msg')
         key rdb$get_context('USER_SESSION', 'public_key')) from rdb$database;
 
 
diff --git a/doc/sql.extensions/README.keywords b/doc/sql.extensions/README.keywords
index 6dae3f5b21..570bdb6f58 100644
--- a/doc/sql.extensions/README.keywords
+++ b/doc/sql.extensions/README.keywords
@@ -363,8 +363,8 @@ Firebird 4.0
     RSA_ENCRYPT *
     RSA_PRIVATE *
     RSA_PUBLIC *
-    RSA_SIGN *
-    RSA_VERIFY *
+    RSA_SIGN_HASH *
+    RSA_VERIFY_HASH *
     SALT_LENGTH *
     SECURITY
     SESSION
diff --git a/src/common/keywords.cpp b/src/common/keywords.cpp
index 0639bc6703..5e8c924f2a 100644
--- a/src/common/keywords.cpp
+++ b/src/common/keywords.cpp
@@ -431,8 +431,8 @@ static const TOK tokens[] =
 	{TOK_RSA_ENCRYPT, "RSA_ENCRYPT", true},
 	{TOK_RSA_PRIVATE, "RSA_PRIVATE", true},
 	{TOK_RSA_PUBLIC, "RSA_PUBLIC", true},
-	{TOK_RSA_SIGN, "RSA_SIGN", true},
-	{TOK_RSA_VERIFY, "RSA_VERIFY", true},
+	{TOK_RSA_SIGN_HASH, "RSA_SIGN_HASH", true},
+	{TOK_RSA_VERIFY_HASH, "RSA_VERIFY_HASH", true},
 	{TOK_SALT_LENGTH, "SALT_LENGTH", true},
 	{TOK_SAVEPOINT, "SAVEPOINT", false},
 	{TOK_SCALAR_ARRAY, "SCALAR_ARRAY", true},
diff --git a/src/dsql/parse.y b/src/dsql/parse.y
index 34020f2cd3..ecfcdadfa3 100644
--- a/src/dsql/parse.y
+++ b/src/dsql/parse.y
@@ -651,8 +651,8 @@ using namespace Firebird;
 %token <metaNamePtr> RSA_ENCRYPT
 %token <metaNamePtr> RSA_PRIVATE
 %token <metaNamePtr> RSA_PUBLIC
-%token <metaNamePtr> RSA_SIGN
-%token <metaNamePtr> RSA_VERIFY
+%token <metaNamePtr> RSA_SIGN_HASH
+%token <metaNamePtr> RSA_VERIFY_HASH
 %token <metaNamePtr> SALT_LENGTH
 %token <metaNamePtr> SECURITY
 %token <metaNamePtr> SESSION
@@ -8221,14 +8221,14 @@ system_function_special_syntax
 					add(MAKE_str_constant(newIntlString($7->c_str()), CS_ASCII)));
 			$$->dsqlSpecialSyntax = true;
 		}
-	| RSA_SIGN '(' value KEY value crypt_opt_hash crypt_opt_saltlen ')'
+	| RSA_SIGN_HASH '(' value KEY value crypt_opt_hash crypt_opt_saltlen ')'
 		{
 			$$ = newNode<SysFuncCallNode>(*$1,
 				newNode<ValueListNode>($3)->add($5)->
 					add(MAKE_str_constant(newIntlString($6->c_str()), CS_ASCII))->add($7));
 			$$->dsqlSpecialSyntax = true;
 		}
-	| RSA_VERIFY'(' value SIGNATURE value KEY value crypt_opt_hash crypt_opt_saltlen ')'
+	| RSA_VERIFY_HASH '(' value SIGNATURE value KEY value crypt_opt_hash crypt_opt_saltlen ')'
 		{
 			$$ = newNode<SysFuncCallNode>(*$1,
 				newNode<ValueListNode>($3)->add($5)->add($7)->
@@ -9028,8 +9028,8 @@ non_reserved_word
 	| RSA_ENCRYPT
 	| RSA_PRIVATE
 	| RSA_PUBLIC
-	| RSA_SIGN
-	| RSA_VERIFY
+	| RSA_SIGN_HASH
+	| RSA_VERIFY_HASH
 	| SALT_LENGTH
 	| SECURITY
 	| SESSION
diff --git a/src/jrd/SysFunction.cpp b/src/jrd/SysFunction.cpp
index 8f1a970d54..8cff7964ca 100644
--- a/src/jrd/SysFunction.cpp
+++ b/src/jrd/SysFunction.cpp
@@ -6430,8 +6430,8 @@ const SysFunction SysFunction::functions[] =
 		{"RSA_ENCRYPT", 4, 4, setParamsRsaEncrypt, makeRsaEncrypt, evlRsaEncrypt, NULL},
 		{"RSA_PRIVATE", 1, 1, setParamsInteger, makeRsaPrivate, evlRsaPrivate, NULL},
 		{"RSA_PUBLIC", 1, 1, setParamsRsaPublic, makeRsaPublic, evlRsaPublic, NULL},
-		{"RSA_SIGN", 4, 4, setParamsRsaSign, makeRsaSign, evlRsaSign, NULL},
-		{"RSA_VERIFY", 5, 5, setParamsRsaVerify, makeBoolResult, evlRsaVerify, NULL},
+		{"RSA_SIGN_HASH", 4, 4, setParamsRsaSign, makeRsaSign, evlRsaSign, NULL},
+		{"RSA_VERIFY_HASH", 5, 5, setParamsRsaVerify, makeBoolResult, evlRsaVerify, NULL},
 		{"SIGN", 1, 1, setParamsDblDec, makeShortResult, evlSign, NULL},
 		{"SIN", 1, 1, setParamsDouble, makeDoubleResult, evlStdMath, (void*) trfSin},
 		{"SINH", 1, 1, setParamsDouble, makeDoubleResult, evlStdMath, (void*) trfSinh},