Index: usr.bin/unzip/unzip.1
===================================================================
--- usr.bin/unzip/unzip.1
+++ usr.bin/unzip/unzip.1
@@ -35,6 +35,7 @@
 .Nm
 .Op Fl aCcfjLlnopqtuvy
 .Op Fl d Ar dir
+.Op Fl P Ar passphrase
 .Ar zipfile
 .Sh DESCRIPTION
 .\" ...
@@ -75,6 +76,9 @@
 When extracting a file from the zipfile, if a file with the same name
 already exists on disk, the existing file is replaced with the file
 from the zipfile.
+.It Fl P Ar passphrase
+When archive file is encrypted by WinZip or PKWARE encryption, use
+passphrase to decrypt it.
 .It Fl p
 Extract to stdout.
 When extracting files from the zipfile, they are written to stdout.
Index: usr.bin/unzip/unzip.c
===================================================================
--- usr.bin/unzip/unzip.c
+++ usr.bin/unzip/unzip.c
@@ -62,6 +62,7 @@
 static int		 L_opt;		/* lowercase names */
 static int		 n_opt;		/* never overwrite */
 static int		 o_opt;		/* always overwrite */
+static const char	*P_arg;		/* passphrase */
 static int		 p_opt;		/* extract to stdout, quiet */
 static int		 q_opt;		/* quiet */
 static int		 t_opt;		/* test */
@@ -869,6 +870,9 @@
 	if ((a = archive_read_new()) == NULL)
 		error("archive_read_new failed");
 
+	if (P_arg != NULL)
+		ac(archive_read_add_passphrase(a, P_arg));
+
 	ac(archive_read_support_format_zip(a));
 	ac(archive_read_open_filename(a, fn, 8192));
 
@@ -940,7 +944,7 @@
 usage(void)
 {
 
-	fprintf(stderr, "Usage: unzip [-aCcfjLlnopqtuvyZ1] [-d dir] [-x pattern] "
+	fprintf(stderr, "Usage: unzip [-aCcfjLlnopqtuvyZ1] [-d dir] [-P passphrase] [-x pattern] "
 		"zipfile\n");
 	exit(1);
 }
@@ -951,7 +955,7 @@
 	int opt;
 
 	optreset = optind = 1;
-	while ((opt = getopt(argc, argv, "aCcd:fjLlnopqtuvx:yZ1")) != -1)
+	while ((opt = getopt(argc, argv, "aCcd:fjLlnoP:pqtuvx:yZ1")) != -1)
 		switch (opt) {
 		case '1':
 			Z1_opt = 1;
@@ -991,6 +995,9 @@
 		case 'p':
 			p_opt = 1;
 			break;
+		case 'P':
+			P_arg = optarg;
+			break;
 		case 'q':
 			q_opt = 1;
 			break;