SSL services

ssl

This is "nn::ssl::sf::ISslService". sdknso uses SessionManager with this, where the additional session-count is user-specified (default is 0x2). An error is thrown when the input value is less than 1 or >4.

Cmd	Name
0	#CreateContext
1	#GetContextCount
2	#GetCertificates
3	#GetCertificateBufSize
4	[3.0.0+] #DebugIoctl
5	[3.0.0+] #SetInterfaceVersion
6	[5.0.0+] #FlushSessionCache
7	[6.0.0+] #SetDebugOption
8	[6.0.0+] #GetDebugOption

CreateContext

Takes a PID, an input u32 #SslVersion, an input u64 pid_placeholder, and returns an output #ISslContext.

GetContextCount

No input, returns an output u32.

This is not exposed by sdknso.

GetCertificates

Takes a type-0x6 output buffer and a type-0x5 input buffer containing an array of #CaCertificateId.

[3.0.0+] This now returns an output u32 for actual total output entries.

The output buffer starts with an array of #BuiltInCertificateInfo, with the DER cert data following afterwards.

GetCertificateBufSize

Takes a type-0x5 input buffer containing an array of #CaCertificateId, returns an output u32 for the size to use with #GetCertificates.

DebugIoctl

Stubbed on retail, just returns an error.

SetInterfaceVersion

Takes an input u32 version, no output.

Used by user-processes during service init.

Value	SystemVersion
0x1	[3.0.0+]
0x2	[5.0.0+]
0x3	[6.0.0+]

FlushSessionCache

Takes a type-0x5 input buffer, an input u32 #FlushSessionCacheOptionType, returns an output u32.

The input buffer contains a NUL-terminated string, which is only used when the type is value 0. For type 1, an empty buffer is passed (addr=NULL/size=0).

SetDebugOption

Takes an input u32 DebugOptionType and a type-0x5 input buffer, no output.

The input u32 value must be 0, and the buffer addr/size must not be 0.

The u8 at buf+0 is copied to state.

The nn::ssl::SetDebugOption func in sdknso just verifies the input and that the service is initialized, without actually using the cmd.

GetDebugOption

Takes an input u32 DebugOptionType and a type-0x6 output buffer.

Same as #SetDebugOption except this copies state to the buffer instead.

ISslContext

This is "nn::ssl::sf::ISslContext".

Cmd	Name
0	#SetOption
1	#GetOption
2	#CreateConnection
3	GetConnectionCount
4	ImportServerPki
5	ImportClientPki
6	RemoveServerPki
7	RemoveClientPki
8	RegisterInternalPki
9	AddPolicyOid
10	[3.0.0+] ImportCrl
11	[3.0.0+] RemoveCrl

SetOption

Takes an input #ContextOption and an input s32, no output.

With #ContextOption value 1, the s32 has to be 0 or 1 (state field is set to the s32 value).

GetOption

Takes an input #ContextOption, returns an output s32.

CreateConnection

No input, returns an #ISslConnection.

ISslConnection

This is "nn::ssl::sf::ISslConnection".

Cmd	Name
0	SetSocketDescriptor
1	SetHostName
2	#SetVerifyOption
3	SetIoMode
4	GetSocketDescriptor
5	GetHostName
6	#GetVerifyOption
7	GetIoMode
8	DoHandshake
9	DoHandshakeGetServerCert
10	Read
11	Write
12	Pending
13	Peek
14	Poll
15	GetVerifyCertError
16	GetNeededServerCertBufferSize
17	SetSessionCacheMode
18	GetSessionCacheMode
19	FlushSessionCache
20	SetRenegotiationMode
21	GetRenegotiationMode
22	SetOption
23	GetOption
24	GetVerifyCertErrors
25	[4.0.0+] GetCipherInfo
26	[9.0.0+] SetNextAlpnProto
27	[9.0.0+] GetNextAlpnProto

SetVerifyOption

Takes an input u32 #VerifyOption, no output.

Originally ssl-sysmodule just wrote the input field to state. With newer sysvers there's now validation for the input.

GetVerifyOption

No input, returns an output u32 #VerifyOption.

SslVersion

This is the "nn::ssl::sf::SslVersion" / "nn::ssl::Context::SslVersion" enum.

FlushSessionCacheOptionType

This is the "nn::ssl::sf::FlushSessionCacheOptionType" / "nn::ssl::FlushSessionCacheOptionType" enum.

Value	Description
0
1

BuiltInCertificateInfo

Offset	Size	Description
0x0	0x4	#CaCertificateId
0x4	0x4	#BuiltinDataStatus
0x8	0x8	Data size
0x10	0x8	Data offset

This is the struct returned by #GetCertificates. Official sw converts this to "nn::ssl::BuiltInManager::BuiltInCertificateInfo" with offset converted to a ptr.

BuiltinDataStatus

Value	Description
-1	Invalid
1	Valid

This is the "nn::ssl::detail::BuiltinDataInfo::BuiltinDataStatus" enum.

CaCertificateId

Value	Description
1	Nintendo {...}
2	Nintendo {...}

This is the "nn::ssl::CaCertificateId" enum.

ContextOption

This is the "nn::ssl::sf::ContextOption" / "nn::ssl::Context::ContextOption" enum.

Value	Description
1

VerifyOption

This is the "nn::ssl::sf::VerifyOption" enum.

CertStore

This is the CertStore title, which contains the following files in RomFS:

• "/ssl_CaFingerprints.bdf"
• "/ssl_Crl.bdf"
• "/ssl_TrustedCerts.bdf"

On old system-versions, this only contains "/ssl_TrustedCerts.tcf", which seems to have the same format described below.

These have the following structure:

Offset	Size	Description
0x0	0x4	Magic "sslT"
0x4	0x4	Total entries
0x8	0x10*{total entries}	Array entries

Array entry structure:

Offset	Size	Description
0x0	0x4	ID
0x4	0x4	?
0x8	0x4	Data size
0xC	0x4	Data offset

Data offset is relative to absolute offset 0x8.

The ID is the same one used by service commands to access these entries. For ssl_TrustedCerts, ID is #CaCertificateId.

Client cert+privk

SSL-sysmodule uses set:cal GetSslKey and GetSslCert. The rest of this section documents handling for the former, which can be decrypted with SPL.

key* below refers to the 3 0x10-byte input blocks passed to this code.

When actual_size is:

• 0x100+0x10: If the u32 actual_size is less than (u32)-0x11, and the last 0x10-bytes of the actual-data are all-zero, the data is copied to the output as raw plaintext. If a non-zero byte is found, it will continue with SPL usage, skipping over the SPL block for the devunit flag. In this case, key=key0 and the flag passed to SPL later is set to 0.
• 0x100+0x30: Size must match this if it's not the above, otherwise error 0xC81A is returned. The flag passed to SPL later is set to 1 in this case. Runs the devunit-flag-block: uses SPL_services#SPL#GetDevunitFlag. key = key1 when out_flag!=0, key2 otherwise.