typo

[openssl.git] / doc / crypto / EVP_SealInit.pod

diff --git a/doc/crypto/EVP_SealInit.pod b/doc/crypto/EVP_SealInit.pod
index 1579d110fa282035237df1a65a89855e6c143133..9579e91d2eb598a2eaa81447c09c0a8bc935cb76 100644 (file)
--- a/doc/crypto/EVP_SealInit.pod
+++ b/doc/crypto/EVP_SealInit.pod
@@ -10,9 +10,9 @@ EVP_SealInit, EVP_SealUpdate, EVP_SealFinal - EVP envelope encryption
 
  int EVP_SealInit(EVP_CIPHER_CTX *ctx, EVP_CIPHER *type, unsigned char **ek,
                int *ekl, unsigned char *iv,EVP_PKEY **pubk, int npubk);
- void EVP_SealUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ int EVP_SealUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out,
          int *outl, unsigned char *in, int inl);
- void EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out,
          int *outl);
 
 =head1 DESCRIPTION
@@ -41,9 +41,10 @@ page.
 
 =head1 RETURN VALUES
 
-EVP_SealInit() returns -1 on error or B<npubk> if successful.
+EVP_SealInit() returns 0 on error or B<npubk> if successful.
 
-EVP_SealUpdate() and EVP_SealFinal() do not return values.
+EVP_SealUpdate() and EVP_SealFinal() return 1 for success and 0 for
+failure.
 
 =head1 NOTES
 
@@ -59,6 +60,11 @@ but symmetric encryption is fast. So symmetric encryption is used for
 bulk encryption and the small random symmetric key used is transferred
 using public key encryption.
 
+It is possible to call EVP_SealInit() twice in the same way as
+EVP_EncryptInit(). The first call should have B<npubk> set to 0
+and (after setting any cipher paramaters) it should be called again
+with B<type> set to NULL.
+
 =head1 SEE ALSO
 
 L<evp(3)|evp(3)>,L<rand(3)|rand(3)>