sqlpostgresqlpgcrypto

psql PGP_SYM_DECRYPT : HINT: No function matches the given name and argument types


Since this morning :

psql PGP_SYM_DECRYPT : HINT:  No function matches the given name and argument types.

LINE 1: select login,PGP_SYM_DECRYPT(password,'*******') from pa...
                     ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.

Extenstion pg_crypto is present.

so I can't select any data from previously pgp_sym_encrypt queries... what goes wrong ? how to solve that ?


Solution

  • To follow investigations I build a copy of the table with less columns. And tried out the same password visual check :

    perso=# select quoi,login,pgp_sym_decrypt(password::bytea,'someKEY') from tempo where quoi ilike '%somesite%' ;                                                                          
         quoi     |         login         | pgp_sym_decrypt                                                                                                                                      
    --------------+-----------------------+-----------------
     somesite.com | somename@somewhere.fr | foobar
    (1 row)
    
    perso=# select quoi,login,pgp_sym_decrypt(password,'someKEY') from tempo where quoi ilike '%somesite%' ;                                                                                 
         quoi     |         login         | pgp_sym_decrypt
    --------------+-----------------------+-----------------
     somesite.com | somename@somewhere.fr | foobar
    (1 row)                                                                                                                                                                                      
    
    perso=# \d+ tempo
                                        Table "public.tempo"
      Column  |  Type   | Collation | Nullable | Default | Storage  | Stats target | Description
    ----------+---------+-----------+----------+---------+----------+--------------+-------------
     ref      | integer |           |          |         | plain    |              |
     quoi     | text    |           |          |         | extended |              |
     login    | text    |           |          |         | extended |              |
     password | bytea   |           |          |         | extended |              |
    

    there is no more problems here so there is an issue on the table or on the data store-mode.

    perso=# \d+ passwd                                                                                                                                                                  
                                                      Table "public.passwd"                                                                                                             
      Column  |  Type   | Collation | Nullable |               Default               | Storage  | Stats target | Description                                                            
    ----------+---------+-----------+----------+-------------------------------------+----------+--------------+-------------                                                           
     ref      | integer |           | not null | nextval('passwd_ref_seq'::regclass) | plain    |              |                                                                        
     quoi     | text    |           | not null |                                     | extended |              |                                                                        
     login    | text    |           | not null |                                     | extended |              |                                                                        
     password | text    |           | not null |                                     | extended |              |                                                                        
    Indexes:                                                                                                                                                                             
        "passwd_pkey" PRIMARY KEY, btree (ref)                                                                                                                                            
        "passwd_password_key" UNIQUE CONSTRAINT, btree (password)                                                                                                                                 
    perso=#
    
    perso=# select quoi,login,pgp_sym_decrypt(password,'someKEY') from passwd where quoi ilike '%somesite%' ;
    ERROR:  function pgp_sym_decrypt(text, unknown) does not exist
    LINE 1: select quoi,login,pgp_sym_decrypt(password,'someKEY') fr...
                              ^
    HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
    perso=# 
    

    here we have back error & detect text on password column. So test :

    as a procedure for my test.

    so I did :

    perso=# 
    perso=# delete from passwd ;
    DELETE 106
    perso=# alter table passwd alter column password type bytea using PGP_SYM_ENCRYPT(password::text,'someKEY');
    ALTER TABLE
    perso=# \d+ passwd
                                                      Table "public.passwd"
      Column  |  Type   | Collation | Nullable |               Default               | Storage  | Stats target | Description 
    ----------+---------+-----------+----------+-------------------------------------+----------+--------------+-------------
     ref      | integer |           | not null | nextval('passwd_ref_seq'::regclass) | plain    |              | 
     quoi     | text    |           | not null |                                     | extended |              | 
     login    | text    |           | not null |                                     | extended |              | 
     password | bytea   |           | not null |                                     | extended |              | 
    Indexes:
        "passwd_pkey" PRIMARY KEY, btree (ref)
        "passwd_password_key" UNIQUE CONSTRAINT, btree (password)
    
    perso=# insert into passwd (ref,quoi,login,password) select ref,quoi,login,password::bytea from tempo ;  
    INSERT 0 106
    perso=# 
    perso=# 
    perso=# select quoi,login,pgp_sym_decrypt(password,'someKEY') from passwd where quoi ilike '%somesite%' ;
         quoi     |         login         | pgp_sym_decrypt 
    --------------+-----------------------+-----------------
     somesite.com | somename@somewhere.fr | foobar
    (1 row)
    
    perso=# 
    

    Then I backup the database; and applied similar procedure to fix the issue with success. It might be a better way to do that but this way I understand the process.

    both solution in there :