diff --git a/src/passes/4-typer-new/typer.ml b/src/passes/4-typer-new/typer.ml
index 4581d916c..4af8da92d 100644
--- a/src/passes/4-typer-new/typer.ml
+++ b/src/passes/4-typer-new/typer.ml
@@ -438,6 +438,9 @@ and type_expression : environment -> Solver.state -> ?tv_opt:O.type_value -> I.e
   | E_literal (Literal_key s) -> (
       return_wrapped (e_key s) state @@ Wrap.literal (t_key ())
     )
+  | E_literal (Literal_key_hash s) -> (
+      return_wrapped (e_key_hash s) state @@ Wrap.literal (t_key_hash ())
+    )
   | E_literal (Literal_chain_id s) -> (
       return_wrapped (e_chain_id s) state @@ Wrap.literal (t_chain_id ())
     )
@@ -1010,6 +1013,7 @@ let untype_literal (l:O.literal) : I.literal result =
   | Literal_int n -> ok (Literal_int n)
   | Literal_string s -> ok (Literal_string s)
   | Literal_key s -> ok (Literal_key s)
+  | Literal_key_hash s -> ok (Literal_key_hash s)
   | Literal_chain_id s -> ok (Literal_chain_id s)
   | Literal_signature s -> ok (Literal_signature s)
   | Literal_bytes b -> ok (Literal_bytes b)
diff --git a/src/passes/4-typer-old/typer.ml b/src/passes/4-typer-old/typer.ml
index 89f92ec76..b5aed38d9 100644
--- a/src/passes/4-typer-old/typer.ml
+++ b/src/passes/4-typer-old/typer.ml
@@ -406,6 +406,8 @@ and type_expression' : environment -> ?tv_opt:O.type_value -> I.expression -> O.
       return (E_literal (Literal_string s)) (t_string ())
   | E_literal (Literal_key s) ->
       return (E_literal (Literal_key s)) (t_key ())
+  | E_literal (Literal_key_hash s) ->
+      return (E_literal (Literal_key_hash s)) (t_key_hash ())
   | E_literal (Literal_chain_id s) ->
       return (E_literal (Literal_chain_id s)) (t_chain_id ())
   | E_literal (Literal_signature s) ->
@@ -816,6 +818,7 @@ let untype_literal (l:O.literal) : I.literal result =
   | Literal_string s -> ok (Literal_string s)
   | Literal_signature s -> ok (Literal_signature s)
   | Literal_key s -> ok (Literal_key s)
+  | Literal_key_hash s -> ok (Literal_key_hash s)
   | Literal_chain_id s -> ok (Literal_chain_id s)
   | Literal_bytes b -> ok (Literal_bytes b)
   | Literal_address s -> ok (Literal_address s)
diff --git a/src/passes/6-transpiler/transpiler.ml b/src/passes/6-transpiler/transpiler.ml
index 6bf94ca27..521d531fa 100644
--- a/src/passes/6-transpiler/transpiler.ml
+++ b/src/passes/6-transpiler/transpiler.ml
@@ -130,6 +130,7 @@ let rec transpile_type (t:AST.type_value) : type_value result =
   | T_constant (Type_name "unit", []) -> ok (T_base Base_unit)
   | T_constant (Type_name "operation", []) -> ok (T_base Base_operation)
   | T_constant (Type_name "signature", []) -> ok (T_base Base_signature)
+  | T_constant (Type_name "key_hash", []) -> ok (T_base Base_key_hash)
   | T_constant (Type_name "key", []) -> ok (T_base Base_key)
   | T_constant (Type_name "chain_id", []) -> ok (T_base Base_chain_id)
   | T_constant (Type_name "contract", [x]) ->
@@ -241,6 +242,7 @@ let rec transpile_literal : AST.literal -> value = fun l -> match l with
   | Literal_address s -> D_string s
   | Literal_signature s -> D_string s
   | Literal_key s -> D_string s
+  | Literal_key_hash s -> D_string s
   | Literal_chain_id s -> D_string s
   | Literal_operation op -> D_operation op
   | Literal_unit -> D_unit
diff --git a/src/passes/6-transpiler/untranspiler.ml b/src/passes/6-transpiler/untranspiler.ml
index e8fd27683..2ebe2ac1f 100644
--- a/src/passes/6-transpiler/untranspiler.ml
+++ b/src/passes/6-transpiler/untranspiler.ml
@@ -156,6 +156,12 @@ let rec untranspile (v : value) (t : AST.type_value) : AST.annotated_expression
       get_string v in
     return (E_literal (Literal_key n))
   )
+  | T_constant (Type_name "key_hash", []) -> (
+    let%bind n =
+      trace_strong (wrong_mini_c_value "key_hash" v) @@
+      get_string v in
+    return (E_literal (Literal_key_hash n))
+  )
   | T_constant (Type_name "chain_id", []) -> (
     let%bind n =
       trace_strong (wrong_mini_c_value "chain_id" v) @@
diff --git a/src/passes/8-compiler/compiler_type.ml b/src/passes/8-compiler/compiler_type.ml
index bef509a45..a9380e5de 100644
--- a/src/passes/8-compiler/compiler_type.ml
+++ b/src/passes/8-compiler/compiler_type.ml
@@ -32,6 +32,7 @@ module Ty = struct
   let mutez = Mutez_t None
   let string = String_t None
   let key = Key_t None
+  let key_hash = Key_hash_t None
   let chain_id = Chain_id_t None
   let list a = List_t (a, None , has_big_map a)
   let set a = Set_t (a, None)
@@ -71,6 +72,7 @@ module Ty = struct
     | Base_operation -> fail (not_comparable "operation")
     | Base_signature -> fail (not_comparable "signature")
     | Base_key -> fail (not_comparable "key")
+    | Base_key_hash -> fail (not_comparable "key_hash")
     | Base_chain_id -> fail (not_comparable "chain_id")
 
   let comparable_type : type_value -> ex_comparable_ty result = fun tv ->
@@ -88,7 +90,7 @@ module Ty = struct
 
   let base_type : type_base -> ex_ty result = fun b ->
     let return x = ok @@ Ex_ty x in
-    match b with
+   match b with
     | Base_unit -> return unit
     | Base_void -> fail (not_compilable_type "void")
     | Base_bool -> return bool
@@ -102,6 +104,7 @@ module Ty = struct
     | Base_operation -> return operation
     | Base_signature -> return signature
     | Base_key -> return key
+    | Base_key_hash -> return key_hash
     | Base_chain_id -> return chain_id
 
   let rec type_ : type_value -> ex_ty result =
@@ -186,6 +189,7 @@ let base_type : type_base -> O.michelson result =
   | Base_operation -> ok @@ O.prim T_operation
   | Base_signature -> ok @@ O.prim T_signature
   | Base_key -> ok @@ O.prim T_key
+  | Base_key_hash -> ok @@ O.prim T_key_hash
   | Base_chain_id -> ok @@ O.prim T_chain_id
 
 let rec type_ : type_value -> O.michelson result =
diff --git a/src/passes/8-compiler/uncompiler.ml b/src/passes/8-compiler/uncompiler.ml
index 5440ac92a..44763e23e 100644
--- a/src/passes/8-compiler/uncompiler.ml
+++ b/src/passes/8-compiler/uncompiler.ml
@@ -36,12 +36,10 @@ let rec translate_value (Ex_typed_value (ty, value)) : value result =
       (Tezos_base__TzPervasives.Chain_id.b58check_encoding)
       id in
     ok @@ D_string str
+  | (Key_hash_t _ ), n ->
+    ok @@ D_string (Signature.Public_key_hash.to_b58check n)
   | (Key_t _ ), n ->
-    let%bind s =  match n with
-      | Ed25519 x -> ok @@ TP.Base58.simple_encode (TP.Ed25519.Public_key.b58check_encoding) x
-      | Secp256k1 x -> ok @@ TP.Base58.simple_encode (TP.Secp256k1.Public_key.b58check_encoding) x
-      | P256 x -> ok @@ TP.Base58.simple_encode (TP.P256.Public_key.b58check_encoding) x in
-    ok @@ D_string s
+    ok @@ D_string (Signature.Public_key.to_b58check n)
   | (Timestamp_t _), n ->
       let n =
         Z.to_int @@
diff --git a/src/passes/operators/helpers.ml b/src/passes/operators/helpers.ml
index 28b6fb20e..edcf6a6c0 100644
--- a/src/passes/operators/helpers.ml
+++ b/src/passes/operators/helpers.ml
@@ -127,6 +127,7 @@ module Typer = struct
         t_bytes () ;
         t_address () ;
         t_timestamp () ;
+        t_key_hash () ;
       ] in
     ok @@ t_bool ()
 
diff --git a/src/passes/operators/operators.ml b/src/passes/operators/operators.ml
index 2d4b20646..956b8e6ed 100644
--- a/src/passes/operators/operators.ml
+++ b/src/passes/operators/operators.ml
@@ -80,6 +80,7 @@ module Simplify = struct
       ("string_concat" , "CONCAT") ;
       ("string_slice" , "SLICE") ;
       ("crypto_check", "CHECK_SIGNATURE") ;
+      ("crypto_hash_key", "HASH_KEY") ;
       ("bytes_concat" , "CONCAT") ;
       ("bytes_slice" , "SLICE") ;
       ("bytes_pack" , "PACK") ;
diff --git a/src/stages/ast_simplified/PP.ml b/src/stages/ast_simplified/PP.ml
index a17b93c61..4368af56c 100644
--- a/src/stages/ast_simplified/PP.ml
+++ b/src/stages/ast_simplified/PP.ml
@@ -31,6 +31,7 @@ let literal ppf (l:literal) = match l with
   | Literal_address s -> fprintf ppf "@%S" s
   | Literal_signature s -> fprintf ppf "@%S" s
   | Literal_key s -> fprintf ppf "@%S" s
+  | Literal_key_hash s -> fprintf ppf "@%S" s
   | Literal_chain_id s -> fprintf ppf "@%S" s
   | Literal_operation _ -> fprintf ppf "Operation(...bytes)"
 
diff --git a/src/stages/ast_simplified/combinators.ml b/src/stages/ast_simplified/combinators.ml
index 86ce9aee5..ddcb1952b 100644
--- a/src/stages/ast_simplified/combinators.ml
+++ b/src/stages/ast_simplified/combinators.ml
@@ -26,6 +26,7 @@ let t_unit      : type_expression = T_constant ("unit", [])
 let t_address      : type_expression = T_constant ("address", [])
 let t_signature : type_expression = T_constant ("signature", [])
 let t_key      : type_expression = T_constant ("key", [])
+let t_key_hash : type_expression = T_constant ("key_hash", [])
 let t_option  o : type_expression = T_constant ("option", [o])
 let t_list  t : type_expression = T_constant ("list", [t])
 let t_variable n : type_expression = T_variable n
@@ -66,6 +67,7 @@ let e_address ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_add
 let e_mutez ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_mutez s)
 let e_signature ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_signature s)
 let e_key ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_key s)
+let e_key_hash ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_key_hash s)
 let e_chain_id ?loc s : expression = location_wrap ?loc @@ E_literal (Literal_chain_id s)
 let e'_bytes b : expression' result =
   let%bind bytes = generic_try (simple_error "bad hex to bytes") (fun () -> Hex.to_bytes (`Hex b)) in
diff --git a/src/stages/ast_simplified/combinators.mli b/src/stages/ast_simplified/combinators.mli
index 9e8761e1d..4ae1bb89b 100644
--- a/src/stages/ast_simplified/combinators.mli
+++ b/src/stages/ast_simplified/combinators.mli
@@ -18,7 +18,8 @@ val t_nat       : type_expression
 val t_tez       : type_expression
 val t_unit      : type_expression
 val t_address   : type_expression
-val t_key   : type_expression
+val t_key       : type_expression
+val t_key_hash  : type_expression
 val t_signature : type_expression
 (*
 val t_option    : type_expression -> type_expression
@@ -55,6 +56,7 @@ val e_string : ?loc:Location.t -> string -> expression
 val e_address : ?loc:Location.t -> string -> expression 
 val e_signature : ?loc:Location.t -> string -> expression 
 val e_key : ?loc:Location.t -> string -> expression 
+val e_key_hash : ?loc:Location.t -> string -> expression 
 val e_chain_id : ?loc:Location.t -> string -> expression 
 val e_mutez : ?loc:Location.t -> int -> expression
 val e'_bytes : string -> expression' result
diff --git a/src/stages/ast_simplified/misc.ml b/src/stages/ast_simplified/misc.ml
index 5969d4732..f59cbdb4f 100644
--- a/src/stages/ast_simplified/misc.ml
+++ b/src/stages/ast_simplified/misc.ml
@@ -67,6 +67,9 @@ let assert_literal_eq (a, b : literal * literal) : unit result =
   | Literal_key a, Literal_key b when a = b -> ok ()
   | Literal_key _, Literal_key _ -> fail @@ different_literals "different key" a b
   | Literal_key _, _ -> fail @@ different_literals_because_different_types "key vs non-key" a b
+  | Literal_key_hash a, Literal_key_hash b when a = b -> ok ()
+  | Literal_key_hash _, Literal_key_hash _ -> fail @@ different_literals "different key_hash" a b
+  | Literal_key_hash _, _ -> fail @@ different_literals_because_different_types "key_hash vs non-key_hash" a b
   | Literal_chain_id a, Literal_chain_id b when a = b -> ok ()
   | Literal_chain_id _, Literal_chain_id _ -> fail @@ different_literals "different chain_id" a b
   | Literal_chain_id _, _ -> fail @@ different_literals_because_different_types "chain_id vs non-chain_id" a b
diff --git a/src/stages/ast_simplified/types.ml b/src/stages/ast_simplified/types.ml
index 185d23b23..17c9ac5f0 100644
--- a/src/stages/ast_simplified/types.ml
+++ b/src/stages/ast_simplified/types.ml
@@ -97,6 +97,7 @@ and literal =
   | Literal_timestamp of int
   | Literal_signature of string
   | Literal_key of string
+  | Literal_key_hash of string
   | Literal_chain_id of string
   | Literal_operation of Memory_proto_alpha.Protocol.Alpha_context.packed_internal_operation
 
diff --git a/src/stages/ast_typed/PP.ml b/src/stages/ast_typed/PP.ml
index 5fdf5e849..4b97a9f2c 100644
--- a/src/stages/ast_typed/PP.ml
+++ b/src/stages/ast_typed/PP.ml
@@ -76,6 +76,7 @@ and literal ppf (l:literal) : unit =
   | Literal_address s -> fprintf ppf "@%s" s
   | Literal_signature s -> fprintf ppf "@%s" s
   | Literal_key s -> fprintf ppf "@%s" s
+  | Literal_key_hash s -> fprintf ppf "@%s" s
   | Literal_operation _ -> fprintf ppf "Operation(...bytes)"
   | Literal_chain_id s -> fprintf ppf "@%s" s
 
diff --git a/src/stages/ast_typed/combinators.ml b/src/stages/ast_typed/combinators.ml
index d32edf170..038c0f226 100644
--- a/src/stages/ast_typed/combinators.ml
+++ b/src/stages/ast_typed/combinators.ml
@@ -246,6 +246,7 @@ let e_timestamp s : expression = E_literal (Literal_timestamp s)
 let e_address s : expression = E_literal (Literal_address s)
 let e_signature s : expression = E_literal (Literal_signature s)
 let e_key s : expression = E_literal (Literal_key s)
+let e_key_hash s : expression = E_literal (Literal_key_hash s)
 let e_chain_id s : expression = E_literal (Literal_chain_id s)
 let e_operation s : expression = E_literal (Literal_operation s)
 let e_lambda l : expression = E_lambda l
diff --git a/src/stages/ast_typed/combinators.mli b/src/stages/ast_typed/combinators.mli
index 12b84f779..943470012 100644
--- a/src/stages/ast_typed/combinators.mli
+++ b/src/stages/ast_typed/combinators.mli
@@ -123,6 +123,7 @@ val e_timestamp : int -> expression
 val e_address : string -> expression
 val e_signature : string -> expression
 val e_key : string -> expression
+val e_key_hash : string -> expression
 val e_chain_id : string -> expression
 val e_operation : Memory_proto_alpha.Protocol.Alpha_context.packed_internal_operation -> expression
 val e_lambda : lambda -> expression
diff --git a/src/stages/ast_typed/misc.ml b/src/stages/ast_typed/misc.ml
index f315d9af2..ebb193ebf 100644
--- a/src/stages/ast_typed/misc.ml
+++ b/src/stages/ast_typed/misc.ml
@@ -386,6 +386,9 @@ let assert_literal_eq (a, b : literal * literal) : unit result =
   | Literal_key a, Literal_key b when a = b -> ok ()
   | Literal_key _, Literal_key _ -> fail @@ different_literals "different key" a b
   | Literal_key _, _ -> fail @@ different_literals_because_different_types "key vs non-key" a b
+  | Literal_key_hash a, Literal_key_hash b when a = b -> ok ()
+  | Literal_key_hash _, Literal_key_hash _ -> fail @@ different_literals "different key_hash" a b
+  | Literal_key_hash _, _ -> fail @@ different_literals_because_different_types "key_hash vs non-key_hash" a b
   | Literal_chain_id a, Literal_chain_id b when a = b -> ok ()
   | Literal_chain_id _, Literal_chain_id _ -> fail @@ different_literals "different chain_id" a b
   | Literal_chain_id _, _ -> fail @@ different_literals_because_different_types "chain_id vs non-chain_id" a b
diff --git a/src/stages/ast_typed/types.ml b/src/stages/ast_typed/types.ml
index 4615f156a..4843b2f33 100644
--- a/src/stages/ast_typed/types.ml
+++ b/src/stages/ast_typed/types.ml
@@ -128,6 +128,7 @@ and literal =
   | Literal_address of string
   | Literal_signature of string
   | Literal_key of string
+  | Literal_key_hash of string
   | Literal_chain_id of string
   | Literal_operation of Memory_proto_alpha.Protocol.Alpha_context.packed_internal_operation
 
diff --git a/src/stages/mini_c/PP.ml b/src/stages/mini_c/PP.ml
index 62b7bec2a..c3db61cb5 100644
--- a/src/stages/mini_c/PP.ml
+++ b/src/stages/mini_c/PP.ml
@@ -22,6 +22,7 @@ let type_base ppf : type_base -> _ = function
   | Base_operation -> fprintf ppf "operation"
   | Base_signature -> fprintf ppf "signature"
   | Base_key -> fprintf ppf "key"
+  | Base_key_hash -> fprintf ppf "key_hash"
   | Base_chain_id -> fprintf ppf "chain_id"
 
 let rec type_ ppf : type_value -> _ = function
diff --git a/src/stages/mini_c/types.ml b/src/stages/mini_c/types.ml
index c109fc525..ec4f043e3 100644
--- a/src/stages/mini_c/types.ml
+++ b/src/stages/mini_c/types.ml
@@ -7,7 +7,7 @@ type type_base =
   | Base_timestamp
   | Base_string | Base_bytes | Base_address | Base_key
   | Base_operation | Base_signature
-  | Base_chain_id
+  | Base_chain_id | Base_key_hash
 
 type 'a annotated = string option * 'a
 
diff --git a/src/stages/typesystem/misc.ml b/src/stages/typesystem/misc.ml
index 96f6c472f..62b14c9a2 100644
--- a/src/stages/typesystem/misc.ml
+++ b/src/stages/typesystem/misc.ml
@@ -103,6 +103,7 @@ module Substitution = struct
       | (T.Literal_address _ as x)
       | (T.Literal_signature _ as x)
       | (T.Literal_key _ as x)
+      | (T.Literal_key_hash _ as x)
       | (T.Literal_chain_id _ as x)
       | (T.Literal_operation _ as x) ->
         ok @@ x
diff --git a/src/test/contracts/key_hash.ligo b/src/test/contracts/key_hash.ligo
new file mode 100644
index 000000000..38b72366a
--- /dev/null
+++ b/src/test/contracts/key_hash.ligo
@@ -0,0 +1,5 @@
+function check_hash_key (const kh1 : key_hash; const k2 : key) : bool*key_hash is block {
+  var ret : bool := False ;
+  var kh2 : key_hash := crypto_hash_key(k2) ;
+  if kh1 = kh2 then ret := True else skip; 
+} with (ret, kh2)
\ No newline at end of file
diff --git a/src/test/integration_tests.ml b/src/test/integration_tests.ml
index a6f79b7ee..3217642e9 100644
--- a/src/test/integration_tests.ml
+++ b/src/test/integration_tests.ml
@@ -1277,7 +1277,19 @@ let chain_id () : unit result =
   let%bind () = expect_eq program "get_chain_id" make_input make_expected in
   ok ()
 
+let key_hash () : unit result =
+  let open Tezos_crypto in
+  let (raw_pkh,raw_pk,_) = Signature.generate_key () in
+  let pkh_str = Signature.Public_key_hash.to_b58check raw_pkh in
+  let pk_str = Signature.Public_key.to_b58check raw_pk in
+  let%bind program = type_file "./contracts/key_hash.ligo" in
+  let make_input = e_pair (e_key_hash pkh_str) (e_key pk_str) in
+  let make_expected = e_pair (e_bool true) (e_key_hash pkh_str) in
+  let%bind () = expect_eq program "check_hash_key" make_input make_expected in
+  ok ()
+
 let main = test_suite "Integration (End to End)" [
+    test "key hash" key_hash ;
     test "chain id" chain_id ;
     test "type alias" type_alias ;
     test "function" function_ ;