BCAT Content Container - Revision history

Behemoth at 16:28, 18 November 2020

2020-11-18T15:28:39Z

← Older revision		Revision as of 18:28, 18 November 2020
Line 14:		Line 14:
	\| 0x4		\| 0x4
	\| 0x1		\| 0x1
	\| ?		\| ? Required to be 1.
	\|-		\|-
	\| 0x5		\| 0x5
Line 43:		Line 43:
	The header is 0x120-bytes.		The header is 0x120-bytes.

	Settings config for 1-byte <"bcat", "production_mode"> is loaded, the output is used to determine which RSA modulo to use.		Settings config for 1-byte <"bcat", "production_mode"> is loaded, the output is used to determine which RSA modulo and secret data array to use.

	=Key generation=		=Key generation=

Yellows8 at 03:43, 8 August 2017

2017-08-08T01:43:57Z

← Older revision		Revision as of 05:43, 8 August 2017
Line 22:		Line 22:
	\| 0x6		\| 0x6
	\| 0x1		\| 0x1
	\| RSA/Hash Type: {0x0,0x2} = SHA1, {0x1,0x3} = SHA256. The former value in each pair is RSA PKCS1. Value >0x3 eventually results in an error being thrown.		\| RSA/Hash Type: {0x0,0x2} = SHA1, {0x1,0x3} = SHA256. The former value in each pair is RSA PKCS1, while the later value in each pair is RSA PSS. Value >0x3 eventually results in an error being thrown.
	\|-		\|-
	\| 0x7		\| 0x7
Line 42:		Line 42:

	The header is 0x120-bytes.		The header is 0x120-bytes.

			Settings config for 1-byte <"bcat", "production_mode"> is loaded, the output is used to determine which RSA modulo to use.

	=Key generation=		=Key generation=

SciresM: passphrase info

2017-08-08T00:17:26Z

passphrase info

← Older revision		Revision as of 04:17, 8 August 2017
Line 46:		Line 46:
	The AES keydata is the output from pkcs5_pbkdf2_hmac, with SHA256: password = <passphrase string loaded from file>, salt = <below salt string>, and iteration_count=4096.		The AES keydata is the output from pkcs5_pbkdf2_hmac, with SHA256: password = <passphrase string loaded from file>, salt = <below salt string>, and iteration_count=4096.

	The passphrase is loaded from "<basepath>/passphrase.bin". passphrase_len=strlen(passphrase). 0x40-bytes are read from the file, with 0x0 being written to passphrase[total_read_data]. salt_len = strlen(salt).		The passphrase is loaded from "<basepath>/passphrase.bin" (this data originally comes from the title's control.nacp @ 0x3100). passphrase_len=strlen(passphrase). 0x40-bytes are read from the file, with 0x0 being written to passphrase[total_read_data]. salt_len = strlen(salt).

	salt is the snprintf output from "%016llx%s", where the former is the titleID, while the latter is secretdata_str. secretdata_str = secretdata_array[<value of hdr+0x7>].		salt is the snprintf output from "%016llx%s", where the former is the titleID, while the latter is secretdata_str. secretdata_str = secretdata_array[<value of hdr+0x7>].

	Settings config for 1-byte <"bcat", "production_mode"> is loaded, when retval!=1 or output_config!=0, then secretdata_array = secretdata_array0(retail), otherwise secretdata_array = secretdata_array1(devunit). The latter only contains empty strings, while the former contains lower-case hex strings. There are 16 entries in each array.		Settings config for 1-byte <"bcat", "production_mode"> is loaded, when retval!=1 or output_config!=0, then secretdata_array = secretdata_array0(retail), otherwise secretdata_array = secretdata_array1(devunit). The latter only contains empty strings, while the former contains lower-case hex strings. There are 16 entries in each array.

Yellows8 at 01:33, 8 August 2017

2017-08-07T23:33:10Z

← Older revision		Revision as of 03:33, 8 August 2017
Line 22:		Line 22:
	\| 0x6		\| 0x6
	\| 0x1		\| 0x1
	\| RSA Hash Type: 0x1,0x3 = SHA256~~, 0x0,0x2 = SHA1~~		\| RSA/Hash Type: {0x0,0x2} = SHA1, {0x1,0x3} = SHA256. The former value in each pair is RSA PKCS1. Value >0x3 eventually results in an error being thrown.
	\|-		\|-
	\| 0x7		\| 0x7

Yellows8: /* Header */

2017-08-07T21:47:26Z

Header

← Older revision		Revision as of 01:47, 8 August 2017
Line 18:		Line 18:
	\| 0x5		\| 0x5
	\| 0x1		\| 0x1
	\| Crypto type: 0x1 = ~~type1~~, 0x2 = ~~type2~~, 0x3 = ~~type3~~. Everything else indicates plaintext.		\| Crypto type: 0x1 = AES-128-CTR, 0x2 = AES-192-CTR, 0x3 = AES-256-CTR. Everything else indicates plaintext.
	\|-		\|-
	\| 0x6		\| 0x6

Shinyquagsire23 at 23:38, 7 August 2017

2017-08-07T21:38:27Z

← Older revision		Revision as of 01:38, 8 August 2017
Line 22:		Line 22:
	\| 0x6		\| 0x6
	\| 0x1		\| 0x1
	\| ?		\| RSA Hash Type: 0x1,0x3 = SHA256, 0x0,0x2 = SHA1
	\|-		\|-
	\| 0x7		\| 0x7

Yellows8: /* Header */

2017-08-06T23:21:09Z

Header

← Older revision		Revision as of 03:21, 7 August 2017
Line 18:		Line 18:
	\| 0x5		\| 0x5
	\| 0x1		\| 0x1
	\| Crypto type		\| Crypto type: 0x1 = type1, 0x2 = type2, 0x3 = type3. Everything else indicates plaintext.
	\|-		\|-
	\| 0x6		\| 0x6

Shinyquagsire23 at 00:44, 7 August 2017

2017-08-06T22:44:10Z

← Older revision		Revision as of 02:44, 7 August 2017
Line 38:		Line 38:
	\| 0x20		\| 0x20
	\| 0x100		\| 0x100
	\| RSA-2048 signature~~, presumably.~~		\| RSA-2048 signature
	\|}		\|}

Line 48:		Line 48:
	The passphrase is loaded from "<basepath>/passphrase.bin". passphrase_len=strlen(passphrase). 0x40-bytes are read from the file, with 0x0 being written to passphrase[total_read_data]. salt_len = strlen(salt).		The passphrase is loaded from "<basepath>/passphrase.bin". passphrase_len=strlen(passphrase). 0x40-bytes are read from the file, with 0x0 being written to passphrase[total_read_data]. salt_len = strlen(salt).

	salt is the snprintf output from "%016llx%s", where the former is ~~presumably~~ the titleID, while the latter is secretdata_str. secretdata_str = secretdata_array[<value of hdr+0x7>].		salt is the snprintf output from "%016llx%s", where the former is the titleID, while the latter is secretdata_str. secretdata_str = secretdata_array[<value of hdr+0x7>].

	Settings config for 1-byte <"bcat", "production_mode"> is loaded, when retval!=1 or output_config!=0, then secretdata_array = secretdata_array0(retail), otherwise secretdata_array = secretdata_array1(devunit). The latter only contains empty strings, while the former contains lower-case hex strings. There are 16 entries in each array.		Settings config for 1-byte <"bcat", "production_mode"> is loaded, when retval!=1 or output_config!=0, then secretdata_array = secretdata_array0(retail), otherwise secretdata_array = secretdata_array1(devunit). The latter only contains empty strings, while the former contains lower-case hex strings. There are 16 entries in each array.

Yellows8 at 23:14, 6 August 2017

2017-08-06T21:14:43Z

← Older revision		Revision as of 01:14, 7 August 2017
Line 34:		Line 34:
	\| 0x10		\| 0x10
	\| 0x10		\| 0x10
	\| Base IV		\| Base IV/CTR
	\|-		\|-
	\| 0x20		\| 0x20
Line 42:		Line 42:

	The header is 0x120-bytes.		The header is 0x120-bytes.

			=Key generation=
			The AES keydata is the output from pkcs5_pbkdf2_hmac, with SHA256: password = <passphrase string loaded from file>, salt = <below salt string>, and iteration_count=4096.

			The passphrase is loaded from "<basepath>/passphrase.bin". passphrase_len=strlen(passphrase). 0x40-bytes are read from the file, with 0x0 being written to passphrase[total_read_data]. salt_len = strlen(salt).

			salt is the snprintf output from "%016llx%s", where the former is presumably the titleID, while the latter is secretdata_str. secretdata_str = secretdata_array[<value of hdr+0x7>].

			Settings config for 1-byte <"bcat", "production_mode"> is loaded, when retval!=1 or output_config!=0, then secretdata_array = secretdata_array0(retail), otherwise secretdata_array = secretdata_array1(devunit). The latter only contains empty strings, while the former contains lower-case hex strings. There are 16 entries in each array.

Yellows8: Created page with "Content downloaded by BCAT normally uses this container. =Header= {| class="wikitable" border="1" |- ! Offset ! Size ! Description |- | 0x0 | 0x4 | Magicnum..."

2017-08-06T20:40:28Z

Created page with "Content downloaded by BCAT normally uses this container. =Header= {| class="wikitable" border="1" |- ! Offset ! Size ! Description |- | 0x0 | 0x4 | Magicnum..."

New page

Content downloaded by [[BCAT_services|BCAT]] normally uses this container.

=Header=
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| Magicnum "bcat"
|-
| 0x4
| 0x1
| ?
|-
| 0x5
| 0x1
| Crypto type
|-
| 0x6
| 0x1
| ?
|-
| 0x7
| 0x1
| Secret-data index
|-
| 0x8
| 0x8
| Normally zero?
|-
| 0x10
| 0x10
| Base IV
|-
| 0x20
| 0x100
| RSA-2048 signature, presumably.
|}

The header is 0x120-bytes.